五年级上册口算训练

数学五年级上册100道口算题及答案题目一：四则运算1. 564 + 273 =2. 686 - 347 =3. 248 × 6 =4. 674 ÷ 7 =5. 462 + 398 - 182 =6. 942 ÷ 6 × 3 =7. 527 × 8 ÷ 4 =8. 392 ÷ 7 + 189 =9. (628 - 244) × 3 =10. (346 + 165) ÷ 11 =题目二：进位与退位运算1. 398 + 187 =2. 580 - 359 =3. 790 + 521 - 413 =4. 798 - 275 + 463 =5. 643 + 276 - 418 =6. 906 - 362 + 498 =7. 501 + 359 - 183 =8. 852 - 296 + 429 =9. 783 + 419 - 377 =10. 963 - 548 + 657 =题目三：整数乘除法1. 528 × 4 =2. 737 ÷ 5 =3. 361 × 7 =4. 820 ÷ 6 =5. 912 × 2 ÷ 4 =6. 714 ÷ 3 × 2 =7. 659 × 3 ÷ 7 =8. 428 ÷ 4 × 5 =9. 593 × 6 ÷ 9 =10. 487 ÷ 7 × 8 =题目四：正方形和长方形1. 某正方形的边长是7cm，它的周长是多少？面积是多少？2. 某长方形的长是12cm，宽是8cm，它的周长是多少？面积是多少？3. 已知一个正方形的面积是169cm²，它的周长是多少？4. 一个长方形的周长是48cm，长是16cm，它的宽是多少？面积是多少？5. 一个长方形的周长是60cm，长是18cm，它的宽是多少？面积是多少？题目五：整数的加减混合运算1. 392 - 136 + 279 =2. 319 + 428 - 228 =3. 498 - 237 + 412 - 187 =4. 323 + 718 - 529 - 374 =5. 445 - 182 + 396 - 219 =6. 289 + 653 - 498 + 214 =7. 514 - 192 + 398 - 146 =8. 387 + 517 - 279 + 251 =9. 602 - 218 + 517 - 352 =10. 446 + 724 - 598 - 372 =答案：题目一：1. 837 2. 339 3. 1488 4. 96 5. 678 6. 471 7. 1054 8. 243 9. 1084 10. 41题目二：1. 585 2. 221 3. 898 4. 986 5. 501 6. 1042 7. 677 8. 985 9. 825 10. 1072题目三：1. 2112 2. 147 3. 2527 4. 136 5. 456 6. 476 7. 281 8. 535 9. 354 10. 556题目四：1. 周长：28cm，面积：49cm² 2. 周长：40cm，面积：96cm² 3. 周长：52cm 4. 宽：8cm，面积：128cm² 5. 宽：12cm，面积：216cm²题目五：1. 535 2. 519 3. 486 4. 138 5. 440 6. 358 7. 574 8. 876 9. 649 10. 200。

五年级上册数学口算题100道带答案快匿名网友:2.8×0.4＝ 1.12 14－7.4＝6.6, 1.92÷0.04＝48,0.32×500＝160, 0.65＋4.35＝ 5 10－5.4＝4.6, 4÷20＝0.2, 3.5×200＝700, 1.5－0.06＝1.44 0.75÷15＝0.05, 0.4×0.8＝0.32, 4×0.25＝1, 0.36＋1.54＝2 1.01×99＝99.99, 420÷35＝12, 25×12＝300, 135÷0.5＝270 3/4 + 1/4 =1, 2 + 4/9 =22/9, 3 - 2/3 =7/3, 3/4 - 1/2= 1/41/6 + 1/2 -1/6 =1/2, 7.5-(2.5+3.8)=1.2, 7/8 + 3/8 =5/4 3/10 +1/5 =1/2, 4/5 - 7/10 =1/10, 2 - 1/6 -1/3 =1.5 0.51÷17＝0.03, 32.8＋19＝51.8, 5.2÷1.3＝4, 1.6×0.4＝0.64 4.9×0.7＝3.43, 1÷5＝0.2, 6÷12＝0.5, 0.87－0.49＝0.38 2/1_2=1 3/1_3=1 3/2_3=2 3/1_6=2 4/3_8=65/3_20=12 7/3_14=6 8/7_40=35 4/3_16=12 9/5_27=152/1_30=15 12/7_24=14 30/1_30=1 51/9_102=18 19/9_76=36 4/9_8=18 5/8_90=144 99/98_99=98 3/14_6=28 7/1_28=410/1_90=9 5/3_105=63 19/7_38=14 5/1_25=5 8/19_16=3861/60_122=120 7/2_28=8 6/1_48=8 9/7_18=14 25/7_100=28 9/5_81=45 8/9_16=18 2/1_2=1 3/1_3=1 3/2_3=2 3/1_6=24/3_8=6 5/3_20=12 7/3_14=6 8/7_40=35 4/3_16=129/5_27=15 2/1_30=15 12/7_24=14 30/1_30=1 51/9_102=18 19/9_76=36 4/9_8=18 5/8_90=144 99/98_99=98 3/14_6=287/1_28=4 10/1_90=9 5/3_105=63 19/7_38=14 5/1_25=58/19_16=38 61/60_122=120 7/2_28=8 6/1_48=8 9/7_18=14 25/7_100=28 9/5_81=45 8/9_16=18 12÷3/5=12×(5/3）9÷6/7=9×( 7/6 ) 30÷5/6=30×（6/5 ）4×（3/2 ）=4÷2/3 4÷5/7=4×7/5 3÷4/5=3×5/4 24÷7/16=24×（16/7 ）A÷C/B=A×B/C 4÷4/5=5 6÷3/4=8 10÷2/5=25 18÷4/9=81/2 4×4/5=16/5 6×3/4=18/4 10×2/5=418×4/9=8 3÷3/4=4 2÷1/3=6 6÷4/5=15/2 1÷5/7=7/53/4÷3=1/4 1/3÷2=1/6 4/5÷6=2/15 5/7÷1=5/7 2/1_2=13/1_3=1 3/2_3=2 3/1_6=2 4/3_8=6 5/3_20=12 7/3_14=68/7_40=35 4/3_16=12 9/5_27=15 2/1_30=15 12/7_24=1430/1_30=1 51/9_102=18 19/9_76=36 4/9_8=18 5/8_90=144 99/98_99=98 3/14_6=28 7/1_28=4 10/1_90=9 5/3_105=6319/7_38=14 5/1_25=5 8/19_16=38 61/60_122=120 7/2_28=8 6/1_48=8 9/7_18=14 25/7_100=28 9/5_81=45 8/9_16=18 25 -15 -80 = 10 -80 = -70 26 -6 -64 = 20 -64 = -44 27 + 3 -48 = 30 -48 = -18 28 + 12 -32 = 40 -32 = 8 29 + 21 -16 = 50 -16 = 34 30 + 30 + 0 = 60 + 0 = 60 31 + 39 +16 = 70 + 16 = 86 32 + 48 + 32 = 80 + 32 = 112 33 + 57 + 48 = 90 + 48 = 138 34 + 66 + 64 = 100 + 64 = 164 35 + 75 + 80 = 110 + 80 = 190 36 + 84 + 96 = 120 + 96 = 216 37 + 93 + 112 = 130 + 112 = 242 38 + 102 + 128 = 140 + 128 = 268 39 + 111 + 144 = 150 + 144 = 294 40 -30 -140 = 10 -140 = -130 41 -21 -124 = 20 -124 = -104 42 -12 -108 = 30 -108 = -78 43 -3 -92 = 40 -92 = -52 44 + 6 -76 = 50 -76 = -26 45 + 15 -60 = 60 -60 = 0 46 + 24 -44 = 70 -44 = 26 47 + 33 -28 = 80 -28 = 52 48 + 42 -12 = 90 -12 = 78 49 + 51 + 4 = 100 + 4 = 104 50 + 60 + 20 = 110 + 20 = 130 51 + 69 + 36 = 120 + 36 = 156 52 + 78 + 52 = 130 + 52 = 182 53 + 87 + 68 = 140 + 68 = 208 54 + 96 + 84 = 150 + 84 = 234 55 -45 -200 = 10 -200 = -190 56 -36 -184 = 20 -184 = -164 57 -27 -168 = 30 -168 = -138 58 -18 -152 = 40 -152 = -112 59 -9 -136 = 50 -136 = -86 60 + 0 -120 = 60 -120 = -60 61 + 9 -104 = 70 -104 = -34 62 + 18 -88 = 80 -88 = -8 63 + 27 -72 = 90 -72 = 18 64 + 36 -56 = 100 -56 = 44 65 + 45 -40 = 110 -40 = 70 66 + 54 -24 = 120 -24 = 96 67 + 63 -8 = 130 -8 = 122 68 + 72 + 8 = 140 + 8 = 148 69 + 81 + 24 = 150 + 24 = 174 70 -60 -260 = 10 -260 = -250 71 -51 -244 = 20 -244 = -224 72 -42 -228 = 30 -228 = -198 73 -33 -212 = 40 -212 = -172 74 -24 -196 = 50 -196 = -146 45+15×6= 135 2.250÷5×8=400 3.6×5÷2×4=604.30×3+8=985.400÷4+20×5= 2006.10+12÷3+20=347.(80÷20+80)÷4=21 8.70+(100-10×5)=120 9.360÷40= 9 10.40×20= 800 11.80-25= 55 12.70+45=115 13.90×2= 180 14.16×6= 96 15.300×6= 1800 16.540÷9=60 17.30×20= 600 18.400÷4= 100 19.350-80= 270 20.160+70=230 21.18-64÷8= 10 22.42÷6+20=27 23.40-5×7= 5 24.80+60÷3=100 25.41+18÷2= 50 26.75-11×5= 20 27.42+7-29= 2028.5600÷80=70 29.25×16= 400 30.120×25= 300031.36×11= 396 32.1025÷25=41 33.336+70= 40634.25×9×4= 900 35.200-33×3= 36.3020-0=20__37.12×50= 600 38.25×8= 200 39.23×11= 25340.125÷25=5 41.4200-2200=2000 42.220+80= 30043.20×8×5= 800 44.600-3×200=0 45.20+20÷2= 3046.35-25÷5= 30 47.36+8-40= 4 48.2800÷40=7049.98÷14 = 7 50.96÷24 = 4 51.56÷14 =4 52.65÷13 = 5 53.75÷15 = 5 54.120÷24 =5 55.200÷25 = 8 56.800÷16 = 5057.840÷21 =40 58.560÷14 = 40 59.390÷13 = 3060.600÷15 =40 61.72÷24 = 3 62.85÷17 = 5 63.90÷15=6 64.96÷16 = 6 65.78÷26 = 4 66.51÷17 =3 67.80÷40 = 2 68.100÷20 = 5 69.100÷4 =25 70.240÷40 = 671.920÷4 = 230 72.300÷60=5 73.64÷2 = 32 74.64÷4 = 16 75.50÷5 =10 76.60÷8 = 7.5 77.96÷4 = 24 78.90÷6 =15 79.400+80 = 480 80.400-80 = 320 81.40×80 =3200 82.400÷80 = 5 83.48÷16 = 3 84.96÷24 =4 85.160×5= 800 86.4×250= 1000 87.0×518= 0 88.10×76= 76089.36×10=360 90.15×6= 90 91.24×3= 72 92.5×18= 90 93.26×4= 74 94.7×15=105 95.32×30= 960 96.40×15=600 97.60×12= 720 98.23×30= 690 99.30×50=1500100.5×700=3500123+25=148 123-35=88 56×7=392135÷5=27 248+89=337 ... 146-23=123 ... 155×5=775 ... 456-12=38... 456+45=501 ...546-457=89 ...45×10=451 ... 564-12=47... 879+54=933 ...896-546=350 ...56×12=672.... 45-5=9... 457+456=913...7+14=21 ... 18-9=9... 8+16=24 ... 25-5=20... 9+18=27... 56-45=11... 10+20=30... 45-23=22... 11+22=33... 78-23=55... 12+24=36... 10-3=7 15-4=11 20-5=15 25-6=1930-7=23 35-8=27 40-9=31 45-10=35 50-11=39 55-12=43 60-13=47 65-14=51 70-15=55 75-16=59 80-17=63 85-18=67 90-19=71 95-20=75 100-21=79 105-22=83 110-23=87 115-24=91120-25=95 125-26=99 130-27=103 13+26=39... 14+28=42... 15+30=45... 16+32=48... 17+34=51... 18+36=54...19+38=57... 20+40=60... 21+42=63... 22+44=66...23+46=69... 24+48=72... 25+50=75... 26+52=78...27+54=81... 28+56=84... 29+58=87... 30+60=90...31+62=93... 32+64=96... 33+66=99... 5 ÷1 =5 10 ÷2 =5 15 ÷3 =5 20 ÷4 =5 25 ÷5 =5 30 ÷6 =5 35 ÷7 =5 40 ÷8 =5 45 ÷9 =5 50 ÷10 =5 55 ÷11 =5 60 ÷12 =5 65 ÷13 =5 70 ÷14 =5 75 ÷15 =5 80 ÷16 5 85 ÷17 5 90 ÷18 5 95 ÷19 5 100 ÷20 5 2/1_2=1 3/1_3=1 3/2_3=23/1_6=2 4/3_8=6 5/3_20=12 7/3_14=6 8/7_40=35 4/3_16=12 9/5_27=15 2/1_30=15 12/7_24=14 30/1_30=1 51/9_102=18 19/9_76=36 4/9_8=18 5/8_90=144 99/98_99=98 3/14_6=287/1_28=4 10/1_90=9 5/3_105=63 19/7_38=14 5/1_25=58/19_16=38 61/60_122=120 7/2_28=8 6/1_48=8 9/7_18=14 25/7_100=28 9/5_81=45 8/9_16=18 12÷3/5=12×（ 5/3）9÷6/7=9×（ 7/6 ）30÷5/6=30×（6/5 ）4×（3/2 ）=4÷2/3 （ 4 ）÷5/7=4×7/5 3÷4/5=3×5/4 （ 24 ）÷7/16=24×（16/7 ）A÷C/B=A×B/C 4÷4/5=5 6÷3/4=8 10÷2/5=25 18÷4/9=81/2 4×4/5=16/5 6×3/4=18/410×2/5=4 18×4/9=8 3÷3/4=4 2÷1/3=6 6÷4/5=15/21÷5/7=7/5 3/4÷3=1/4 1/3÷2=1/6 4/5÷6=2/155/7÷1=5/7 2/1_2=1 3/1_3=1 3/2_3=2 3/1_6=2 4/3_8=65/3_20=12 7/3_14=6 8/7_40=35 4/3_16=12 9/5_27=152/1_30=15 12/7_24=14 30/1_30=1 51/9_102=18 19/9_76=36 4/9_8=18 5/8_90=144 99/98_99=98 3/14_6=28 7/1_28=410/1_90=9 5/3_105=63 19/7_38=14 5/1_25=5 8/19_16=3861/60_122=120 7/2_28=8 6/1_48=8 9/7_18=14 25/7_100=28 9/5_81=452.8×0.4＝ 1.12 14－7.4＝6.6, 1.92÷0.04＝48, 0.32×500＝160, 0.65＋4.35＝ 5 10－5.4＝4.6, 4÷20＝0.2, 3.5×200＝700, 1.5－0.06＝1.44 0.75÷15＝0.05, 0.4×0.8＝0.32, 4×0.25＝1, 0.36＋1.54＝2 1.01×99＝99.99, 420÷35＝12, 25×12＝300, 135÷0.5＝270 3/4 +1/4 =1, 2 + 4/9 =22/9, 3 - 2/3 =7/3, 3/4 - 1/2= 1/41/6 + 1/2 -1/6 =1/2, 7.5-(2.5+3.8)=1.2, 7/8 + 3/8 =5/4 3/10 +1/5 =1/2, 4/5 - 7/10 =1/10, 2 - 1/6 -1/3 =1.5 0.51÷17＝0.03, 32.8＋19＝51.8, 5.2÷1.3＝4, 1.6×0.4＝0.64 4.9×0.7＝3.43, 1÷5＝0.2, 6÷12＝0.5, 0.87－0.49＝0.38 1.(1+1/2)(1+1/3)(1+1/4)......(1+1/100)2.(1-1/2)(1-1/3)(1-1/4)......(1-1/100)3.8+2-8+24.25_4/25_45.7.26-(5.26-1.5)6.286+1987.314-2028.526+301 9.223-99 10.6.25+3.85-2.125+3.875 11.9-2456_21 12.0.5/11.5-4_2.75 13.1/2×3/514.3.375+5.75+2.25+6.625 15.1001－9036÷1816.3.8×5.25+14.5 17.2.1_4.3+5.7_2.1 18.30×1/319.102_45-328 20.2/3×12 21.2.8_3.1+17.6/8 22.3/5×5/6 23.(50-12.5)/2.5 24.2/5×1/3 25.6110_47+639 26.1/2-1/6 27.3.5_2.7-52.2/18 28.1/7×1/529.3.375_0.97+0.97_6.625 30.25×4/531.6.54+2.4+3.46+0.6 32.5/6-1/2 33.95.6_1.8+95.6_8.2 34.1/2×1/5 35.600-420/12 36.344/3.6-5.4_0.2537.16/2+30/2+90/6 38.3001-1998. 39.5000-105_3440.0.15/0.25+0.75_1.2 41.(1/2+1/3+1/4)_0.2442.(25+4)_4 43.300-4263/21 44.0.81/0.25+5.9645.403÷13×27 46.1.5×4.2－0.75÷0.25 47.3.27×4+3.27×5.7 48.（1.2+ 1.8）×4.51025－768÷3249.0.25×80－0.45÷0.9 50.1025－768÷32 51.0.25_2.69_4 52.2348+275_16 53.2/9_15/8-1/12_9/5 54.2.4+2.4_(5.375-3.375) 55.645-45_12 56.0.15+1.2/0.24-0.45 57.3.75-(2.35+0.25/1.25) 58.76_1/4+23_25/100+0.25 59.10-2.87-7.13 60.0.96+9.6_9.9 61.7.5-5.7_1/3 62.12.37-3.25-6.75 63.16_6.8+2.2_16+16 64.401_19+284 65.58.7-16.65/3.7 66.0.4_4.7_2.5+(2.3+5.3) 67.9.31-1.125-7.87568.640+128_45 69.8.2_1.6-0.336/4.2 70.400_(0.62+0.08) 2/1_2=1 3/1_3=1 3/2_3=2 3/1_6=2 4/3_8=6 5/3_20=127/3_14=6 8/7_40=35 4/3_16=12 9/5_27=15 2/1_30=1512/7_24=14 30/1_30=1 51/9_102=18 19/9_76=36 4/9_8=18 5/8_90=144 99/98_99=98 3/14_6=28 7/1_28=4 10/1_90=95/3_105=63 19/7_38=14 5/1_25=5 8/19_16=3861/60_122=120 7/2_28=8 6/1_48=8 9/7_18=14 25/7_100=28 9/5_81=45 8/9_16=18 2/1_2=1 3/1_3=1 3/2_3=2 3/1_6=24/3_8=6 5/3_20=12 7/3_14=6 8/7_40=35 4/3_16=129/5_27=15 2/1_30=15 12/7_24=14 30/1_30=1 51/9_102=18 19/9_76=36 4/9_8=18 5/8_90=144 99/98_99=98 3/14_6=28 7/1_28=4 10/1_90=9 5/3_105=63 19/7_38=14 5/1_25=58/19_16=38 61/60_122=120 7/2_28=8 6/1_48=8 9/7_18=14 25/7_100=28 9/5_81=45 8/9_16=18 12÷3/5=12×（ 5/3）9÷6/7=9×（ 7/6 ）30÷5/6=30×（6/5 ）4×（3/2 ）=4÷2/3 （ 4 ）÷5/7=4×7/5 3÷4/5=3×5/4 （ 24 ）÷7/16=24×（16/7 ）A÷C/B=A×B/C 4÷4/5=5 6÷3/4=8 10÷2/5=25 18÷4/9=81/2 4×4/5=16/5 6×3/4=18/410×2/5=4 18×4/9=8 3÷3/4=4 2÷1/3=6 6÷4/5=15/21÷5/7=7/5 3/4÷3=1/4 1/3÷2=1/6 4/5÷6=2/155/7÷1=5/7 2/1_2=1 3/1_3=1 3/2_3=2 3/1_6=2 4/3_8=65/3_20=12 7/3_14=6 8/7_40=35 4/3_16=12 9/5_27=152/1_30=15 12/7_24=14 30/1_30=1 51/9_102=18 19/9_76=364/9_8=18 5/8_90=144 99/98_99=98 3/14_6=28 7/1_28=410/1_90=9 5/3_105=63 19/7_38=14 5/1_25=5 8/19_16=3861/60_122=120 7/2_28=8 6/1_48=8 9/7_18=14 25/7_100=289/5_81=45 8/9_16=18够了吧。

五年级数学上册口算训练20 题一、整数加减法1. 25 + 36 = 61-解析：个位5+6=11，向十位进1，十位2+3+1=6，所以结果是61。

2. 78 - 45 = 33-解析：个位8-5=3，十位7-4=3，所以结果是33。

二、整数乘法3.12×5 = 60-解析：12 乘以5，先算2×5=10，个位写0 向十位进1，再算1×5=5，加上进位的1 得6，所以结果是60。

4.25×4 = 100-解析：4 个25 是100，也可以先算20×4=80，5×4=20，80+20=100。

三、整数除法5. 72÷8 = 9-解析：想乘法口诀八九七十二，所以72÷8=9。

-解析：96 里面有8 个12，所以96÷12=8。

四、小数加减法7. 3.5 + 2.7 = 6.2-解析：小数点对齐，先算5+7=12，向个位进1，十分位写2，再算3+2+1=6，所以结果是6.2。

8. 5.8 - 3.4 = 2.4-解析：小数点对齐，8-4=4，5-3=2，所以结果是2.4。

五、小数乘法9. 2.5×4 = 10-解析：25×4=100，2.5 是25 的十分之一，所以结果是10。

10. 1.25×8 = 10-解析：125×8=1000，1.25 是125 的百分之一，所以结果是10。

六、小数除法11. 6.3÷0.7 = 9-解析：根据商不变的性质，把被除数和除数同时扩大10 倍，变成63÷7=9。

-解析：同样把被除数和除数同时扩大10 倍，变成81÷9=9。

七、分数加减法13.1/3 + 1/4 = 7/12-解析：先通分，3 和4 的最小公倍数是12，1/3 变成4/12，1/4 变成3/12，4/12 + 3/12 = 7/12。

14.5/6 - 1/3 = 1/2-解析：通分后，5/6 不变，1/3 变成2/6，5/6 - 2/6 = 3/6，约分后是1/2。

第1课时一、口算0.1×5 = 1.6×1 = 0.5×2 = 1.11×9 =0.2×4 = 2.2×5 = 2.5×4 = 2 7×8 =0.5×8 = 1.5×8 = 0.25×4 = 4.5×5 =3.9×10 = 1.8×5 = 1.25×8 = 3.5×4 =12.7×100 = 33.6×2 = 12.5×8 = 1.6×5 =二、计算3.8×7 = 0.46× 14 = 0.45 × 80 = 2.05×8 = 1.48× 46 = 0.128 × 50 =第2课时一、口算3.3×0.7= 0.5×3.3= 1.5×0.4= 0.9×0.3=0.25×0.8= 0.8×0.125= 1.8×0.5= 0.2×0.5=3.06×0.4= 0.4×3.6= 2.4×0.2= 2.5×0.4=2.12×0.7= 1.4×0.5=3.4×0.9= 0.8×1.1=0.7×1.3= 6.3×0.9= 2.2×0.7= 12.5×0.8=二、计算3.9×5.8= 1.07×5.4= 3.8×4.2=2.09×6.7= 0.47×3.6= 1.28×4.5=第3课时一、口算0.8×0.2= 4.5×0.4= 5.3×0.5= 1.5×0.3=1.2×0.5= 4.8×0.5= 25×0.04= 0.05×1.8=0.24×0.6= 2.8×0.4= 2.01×0.6= 0.5×3.5=3.04×0.9= 1.5×0.4= 6.07×0.8= 3.33×0.2=1.25×0.8=2.3×0.9= 0.24×0.5= 1.05×0.6=二、计算0.56×0.14= 0.012×1.8= 4.8×1.5=0.912×2.2= 0.18×0.15= 7.2×0.27=第4课时一、口算1.03×0.5= 0.6×1.7= 12.5×8= 0.4×0.6=101×7.7= 2.9×0.2= 0.4×0.25= 90×0.5=10.1×7.7= 5×1.8= 0.5×0.04= 7.5×0.3=1.25×32= 0.25×24= 0.08×12.5= 0.2×0.46=4.8×12.5= 3.3×0.01=5.6×5= 2.2×0.5=二、计算29×10.1 0.4×9.6×2.5 7.2×1.25×0.813.6×9.5-9.5×3.6 8.7-3.7×0.5 9.9×6.4第5课时一、口算0.2×3= 0.25×4= 4×0.23= 0.7×0.1=1.6×0.2= 8×0.5= 9.24×100= 102×0.4=5.6×5= 1.08×0.7= 2.7×0.3= 4×0.15=2.4×5= 0.6×1.4= 32×0.07= 0.125×8=4.06×2= 0.81×10= 1.5×0.06= 2.4×0.8=二、计算0.055×0.6= 12.4×0.5= 4.6×3.8=60×1.94= 0.72×0.9= 0.93×2.5=第6课时一、口算8.5×0.6= 0.2×7.5= 2.4×0.1= 0.5×0.5=0.04×1.3= 0.4×12.5= 4.1×0.4= 1.2×0.4=3.03×0.6= 0.3×3.7= 0.23×0.5= 8.4×0.5=4.06×0.5= 8.6×0.9= 2.4×0.7= 1.6×0.5=0.7×30.4= 2.4×0.5= 0.39×0.2= 0.25×0.2=二、计算1.得数精确到十分位0.76×2.8≈ 0.18×2.5≈ 8.5×5.5≈2.得数保留两位小数2.29×0.25≈ 0.654×3.3≈ 0.12×0.45≈第7课时一、口算0.8×0.5= 12.5×0.4= 2.4×0.4= 2.2×10.1=1.4×0.4= 3.2×0.5= 4.4×0.5= 0.22×101=25×0.04= 8.2×0.5= 0.125×0.8= 1.01×4.5=0.24×0.5= 2.5×0.8= 12.5×16= 1.01×0.45=7.6×0.5= 2.1×0.7= 100.1×3.3= 0.125×1.6=二、计算2.5×9.9 2.5×0.9×0.4 0.125×3.20.4×1.25×2.5×0.8 (30+2.5)×0.4 7.3×1.25×0.8第8课时一、口算5.5×0.4= 0.3×2.5= 2.4×0.4= 0.9×0.9=0.02×1.9= 0.8×12.5= 4.5×0.8= 1.1×0.7=4.02×0.5= 0.5×3.8= 0.25×0.4= 2.4×0.5=3.03×0.5= 3.7×0.2= 3.14×0.7= 0.15×0.6=1.15×0.7= 0.8×0.55=2.33×0.6= 2.5×0.8=二、计算0.64×3.5= 1.08×4.5= 3.2×6.2=0.058×0.35= 0.26×0.025= 0.832×2.5=第9课时一、口算12.5×80= 5.2×0.01= 2.2×0.8= 0.8×7=2.18×0.5= 0.29×40= 25×0.4= 1.2×6=4.82×0.6= 3.03×200= 3.7×0.3= 2.4×5=13.6×0.4= 5.1×0.07= 2.6×0.8= 3.6×4=7.9×0.9= 0.124×300= 9.2×70= 7.5×3=二、计算9.9×1.3-7.5 3.5×1.6＋8.4 6.1×0.9+0.12.4×2.1×20.3 9.1×5.3+5.3×0.9 1.25×2.7×0.8第10课时一、口算1×1.1×0.4= 0.4×0.7= 0.6×0.7= 0.1×0.2=2.2×0.6= 0.6×0.4= 0.7×0.8= 0.2×0.3=3.3×0.7= 0.6×0.8= 0.8×0.9= 0.3×0.4=4.4×0.8= 0.9×0.6= 0.9×10= 0.4×0.5=5.5×0.9= 0.1×0.5= 10×0.1= 0.5×0.6=二、计算0.7×0.15+0.3×0.15 1.25×0.96×0.8 10.1×2614-7.32-2.68 1.25×7＋1.25 2.5×4.4第11课时一、口算0.9×0.7= 0.15×2= 10.8+3.2= 29+74=3.4×0.4= 0×2.8= 1.25+1.6= 320-68=0.16×0.7= 80×1.25= 5-4.99= 42×7=1.6×4= 1.5×3= 19.9-9.5= 25×16=0.8×125= 30×0.06= 12.7+7.6= 75÷5=二、计算0.12×8.6= 3.03×6.5= 13.2×0.9=5.37×0.45= 7.9×0.028= 0.046×0.82=第12课时一、口算1.1×0.3= 1.5×4= 1.6＋18= 36＋44=3.2×0.8= 7.2+1.9= 100×15= 0.5×8=1.5×5= 3.5×0.6= 10-0.8= 45×3=2.5×8= 8.5×0.2= 11.4-1.4= 12.5×80=11.1×10= 77-0.7= 7.5×0.04= 480÷100=二、计算0.47×8.6 3.79×0.04 8.54×6.60.406×0.075 8.6×0.385 2.14×0.085第13课时一、口算4.4÷100= 1.1÷10= 8.1÷3= 3.8÷2=7.2÷2= 3.6÷10= 9.6÷4= 4.8÷3=9.1÷7= 8.4÷4= 48÷2= 0.6÷100=9.3÷3= 6.4÷4= 13.5÷3= 10.8÷9=46.5÷5= 12.6÷7= 31.2÷8= 34.8÷6=二、计算95.2÷34= 43.5÷29= 28.6÷11=27.3÷13= 51.2÷16= 131.6÷28=第14课时一、口算10.5÷7= 4.8÷12= 30÷60= 36÷3=3.9÷13= 14.4÷8= 40÷80= 3.6÷3=6.3÷21= 25÷100= 13.2÷6= 0.36÷3=9.1÷13= 12÷24= 16.1÷7= 0.036÷3=5.7÷19= 13÷1000= 28.8÷9= 0.0036÷3=二、计算147÷35= 0.21÷15= 39÷15=11.88÷27= 18.9÷18= 23.69÷23=第15课时一、口算1.25÷0.5= 0.48÷0.8= 1.8÷0.3= 1.5÷0.5=3.06÷0.3= 0.25÷0.5= 2.7÷0.9=4.8÷0.2=8.16÷0.4= 0.49÷0.7= 3.6÷0.6= 7.2÷0.4=5.75÷0.5= O.54÷0.6= 8.1÷0.9= 1.8÷0.9=7.63÷0.7= 0.16÷0.2= 5.6÷0.7= 9.6÷0.6=二、计算14.4÷3.6= 0.276÷2.3= 0.63÷1.8=0.363÷0.33= 5.13÷0.27= 4.62÷0.44=第16课时一、口算1.72÷0.4= 0.45÷0.5= 60÷0.4= 4.8÷0.8=3.72÷0.6= 0.75÷2.5= 80÷0.5= 9.6÷0.6=4.97÷0.7= 0.56÷0.7= 87÷0.3= 4.8÷0.3=4.16÷0.8= 0.99÷0.9= 72÷0.8= 1.7÷1.7=0.32÷0.4= 198÷0.2= 7.2÷0.8= O.54÷0.6=二、计算42.9÷6.6= 351÷7.8= 115.2÷3.6=1.386÷0.33= 727.2÷0.72=2.952÷0.82=第17课时一、口算3.52÷0.2=4.9÷0.07= 20÷100= 4÷0.5=9.18÷0.9= 1÷0.125= 6.93÷0.7= 1.8÷0.6=7.7÷0.11= 92.4÷3= 9.1÷1.3= 12.12-0.12= 6÷1.2= 2.35÷5= 0.54÷0.3= 10÷0.25=14.4÷8= 6.48÷0.6= 60÷0.5= 7.6÷8=二、计算70.2÷6.5= 38.08÷0.8= 4.56÷0.3=11.7÷0.18= 8.84÷0.17= 6÷0.25=第18课时一、口算0.18÷0.1= 0.75÷0.05= 7.2÷0.02= 3÷0.3=0.35÷0.7= 0.36÷0.12= 4.8÷0.12= 7÷0.7=0.24÷0.6= 3.6÷0.06= 0.48÷0.08= 6÷0.2=0.63-÷0.9= 4.9÷0.07= 0.32÷0.16= 18÷0.9=0.72÷0.8= 8.1÷0.09= 0.33÷0.11= 25÷0.5=二、计算商精确到十分位9.4÷6≈ 5.7÷9≈ 7.09÷0.52≈1.36÷3.5≈2.29÷1.1≈ 23÷3.3≈第19课时一、口算1.8÷0.06= 21.7÷0.7= 1.2÷0.4= 0.7÷7=0.35÷0.7= 20÷0.5= 4.8÷0.6= 0.18÷6=0.24÷0.6= 1.2÷0.8= 81÷0.9= 0.24÷4=0.63÷0.9= 0.6÷0.04= 5.6÷0.7= 7.2÷9=4÷0.8= 1.5÷0.6= 6.3÷0.9= 8.8÷0.04= 二、计算商用循环小数的简便形式表示0.28÷1.5= 4.7÷0.6= 25÷3=12÷0.33= 13÷11= 2.08÷1.8=第20课时一、口算3.5÷0.5=4.9÷7= 0.75÷0.01= 42.7÷0.7=63÷0.9= 3.66÷0.6= 3.6÷6= 84÷0.7=32.32÷0.8= 7.2÷0.9= 6.24÷0.6= 2.4÷4=4.9÷0.5= 3.68÷0.4= 9.63÷0.09= 7.2÷80=0.64÷0.08= 48.6÷0.6= 8.72÷0.8= 9.9÷9=二、计算商保留一位小数0.75÷2.3≈ 3.8÷7.2≈ 2.6÷4.3≈14.07÷2.1≈ 0.024÷0.11≈ 5.7÷1.7≈第21课时一、口算0.11÷0.01= 1.83÷0.3= 28.4÷0.4= 15.5÷5=0.08÷0.04= 1.55÷0.5= 27.9÷0.9= 18.6÷6=0.75÷0.05= 4.08÷0.8= 21.7÷0.5= 32.8÷4=0.48÷0.04= 7.28÷0.7= 28.7÷0.07= 32.8÷0.8=0.09÷0.03= 3.03÷0.3= 5.05÷0.05= 81.9÷.09=二、计算4.73÷0.3= 3.15÷1.1= 48÷11=1.3÷0.6= 3.31÷0.6= 30.1÷33=第22课时一、口算1÷0.2= 5.5÷5= 8÷0.1= 0.1÷2=5.5÷0.5= 2÷0.2= 8÷0.01= 0.2÷2=5.5÷0.05= 8÷0.001= 3÷0.2= 0.3÷2=5.5÷50= 8÷0.0001= 4÷0.2= 0.4÷2=5.5÷500= 8÷10= 5÷0.2= 0.5÷2=二、计算商保留一位小数1.05÷4.10.77÷1.3≈ 57.2÷2.8≈ 1.22÷0.21≈4.1÷0.51≈ 6.67÷0.12≈ 1.05÷4.1≈第23课时一、口算9÷0.5= 5.68÷0.8= 2÷5= 2.1÷0.7= 67÷100= 9.6÷3= 0.45÷0.9= 10.8÷0.108=0.24÷0.6= 72÷0.8= 10÷0.25= 3.24÷0.3=6÷0.15= 5.2÷10= 0÷0.42= 0.92÷0.23=0.03-0.5= 0.84÷21= 4.8÷0.02= 0.47÷0.1=二、计算除不尽的商保留一位小数2.55÷173.33÷1.8 100.48÷3.28.5÷0.51 12.96÷12 0.7÷0.035。