五年级小学数学计算题题完整版

小学五年级上册数学计算题10篇1.小学五年级上册数学计算题篇一12.83＋0.07＝0.15＋0.5＝3.33－2.03＝5.54＋3.6＝1－0.09＝9.9－9＝4－2.8＝0.97－0.9＝【答案】12.9；0.65；1.3；9.14；0.91；0.9；1.2；0.072.小学五年级上册数学计算题篇二（1）2.55÷1.7－0.9×0.3＝1.5－0.27＝1.23（2）1.02×（9.3－5.8）＋2.5＝1.02×3.5＋2.5＝3.57＋2.5＝6.07（3）0.76×4.8＋4.8×0.24＝4.8×（0.76＋0.24）＝4.8×1＝4.8（4）16.2－1.62＋3.8－0.38＝1.62×10－1.62＋0.38×10－0.38＝1.62×（10－1）＋0.38×（10－1）＝1.62×9＋0.38×9＝14.58＋3.42＝18（5）8.6＋1.25×8.6×8＝8.6＋1.25×8×8.6＝8.6＋10×8.6＝8.6＋86＝94.6（6）36÷［（17.5＋1.22）÷26］＝36÷[18.72÷26]＝36÷0.72＝503.小学五年级上册数学计算题篇三2.7－1.64＝*3.83＋0.17＝0.217×18＝4.6×0.45＝7.3÷13≈（得数保留两位小数）9.9÷0.75＝0.072×0.15＝【答案】1.06；4；3.906；2.6；2.07；0.5613.2；0.01084.小学五年级上册数学计算题篇四30.5＋0.05＝0.8×0.05＝0.12÷3＝9.4a＋0.9a＝18÷1000＝0.1－0.01＝0.12×5＝n－0.91n＝【答案】30.55；0.04；0.04；10.3a；0.018；0.09；0.6；0.09n5.小学五年级上册数学计算题篇五0.7＋0.3＝1.6＋3.04＝9.5－5＝6×1.5＝6＋0.07＝3×0.08＝3.4×1000＝2.5－2.1＝0.5×6＝【答案】1；4.64；4.5；1.2；9；6.07；0.24；3400；0.4；36.小学五年级上册数学计算题篇六0.8×[（5－0.68）÷1.2]＝0.8×[4.32÷1.2]＝0.8×3.6＝2.881.25×3.2＝（1.25×8）×0.4＝10×0.4＝4554×0.9＋5.54＝5.54×9＋5.54×1＝（9＋1）×5.54＝10×5.547.小学五年级上册数学计算题篇七0.4＋9.6÷3.2＝0.4＋3＝3.412.5－7.6＋2.5－2.4＝12.5＋2.5－7.6－2.4＝15－（7.6＋2.4）＝15－10＝512.1－（2.1＋8.3）＝12.1－2.1－8.3＝10－8.3＝1.78.小学五年级上册数学计算题篇八15.6－7.64＝0.651÷4.2＝8.5×1.23≈（精确到十分位）10.2－9.85＝13.81﹢6.2＝0.32×2.18≈（得数保留两位小数）*12.36÷1.2＝【答案】7.96；0.155；10.5；0.35；20.01；0.70；10.39.小学五年级上册数学计算题篇九1－0.05＝0.47﹢0.63＝4.8﹢6.2＝0.99－0.9＝100×0.6＝6×0.14＝0.74﹢2.6＝0.1÷0.01＝0.25×0.4＝3.5÷100＝【答案】0.95；1.1；11；0.09；60；0.84；3.34；10；0.1；0.03510.小学五年级上册数学计算题篇十（1）5.33＋1.11＋3.67＝5.33＋3.67＋1.11＝9＋1.11＝10.11（2）0.75×7.5－0.75×3.5＝0.75×（7.5－3.5）＝0.75×4＝3（3）[5×（2－1.916）]÷0.12 ＝[5×0.084]÷0.12＝0.42÷0.12＝3.5。

小学五年级数学上册计算题一、直接写出得数0.5×8= 3.6×0.4= 39.68×0= 47.6×1=4÷0.5= 12÷0.06= 12÷1.2= 3÷30=0.15×7= 3.2×6+3.2×4= 2.5×4×0.36=0.2+0.8×0.5= 6.03×1000= 10×0.6= 6.45×0.01=0.1×0.1= 0.24×0.5= 5.4＋3.6= 1.25－0.25=10.2×4.5＝ 2.5×6＝ 9×0.25＝ 0.125×4=1.25×8×0.5= 16×0.01= 1.78÷0.3= 0.27÷0.003=0.01÷0.1= 1.8×20= x-0.4x= 5d-2d=3.6÷0.4= 0.6×0.8＝ 2.4×3＝ 0.12×0.7＝4÷5＝ 1.6÷0.5＝ 0.2÷0.05＝ 2.5×2.3×4=1.5÷1.5＋1.5= 3.6－1.2÷2.4= 4.7×6＋4×4.7=0.5×4÷0.5×4= 38.5×0×0.38= 0.6×0.8= 3×0.9=2.5×0.4=3.6×0.4 12.5×8= 50×0.04= 80×0.3= 1.1×9二、用竖式计算8.08－2.68＝ 5.546＋29.38＝ 17.04×0.26 ＝ 8.35×3.5＝三、竖式计算0.43×0.29≈ 52.6×0.23≈ 4.58×0.37≈六、竖式计算（用循环小数表示商）36.8÷16≈ 10.1÷3.3≈ 15.3÷11≈五、竖式计算（得数保留三位小数）2.5÷0.7= 2.5÷0.7=3.25×9.04=六、竖式计算（用循环小数表示商）36.8÷16≈ 10.1÷3.3≈ 15.3÷11≈≈七、脱式计算（2.65+2.77）÷（1.98-0.98）= 3.7×91.6+6.3×91.6=0.45×12×0.2= 6.2×2.1－2.12.8－2.8×0.15= 2.8×1.43＋0.57= 10－6.06＋8.5=6×0.25×1.8= 144÷3.6＋27.2=0.87×3.16+4.64= 6.8×0.75÷0.5=13.75÷0.125–2.75= 53+23.4÷7.2=2.881÷0.43－0.24×3.5= 28-(3.4+1.25×2.4)= （31.8+3.2×4）÷5= 31.5×4÷(6+3)=0.64×25×7.8+2.2= 2÷2.5+2.5÷2=194－64.8÷1.8×0.9= 36.72÷4.25×9.9=5180－705×6= 24÷2.4－2.5×0.8=3.416÷（0.016×35）=八、用简便方法计算下面各题5.12＋2.54＋4.88= 12.5×17.8×0.8= 9.9×2.5= 9.4×5.8＋10.6×5.8= 0.125×0.32×0.25= 9.6+9.6×99= 2.8×7.6+1.4×2.8 +2.8=6.3×10.1= 0.25×3.2×12.5=12.5×9.7?12.5×8.7= 3.7×91.6+6.3×91.6=16.84÷40÷0.25= 12.5×0.4×2.5×8= 9.5×101=4.2×7.8+2.2×4.2= 2.55×7.1+2.45×7.1=九、解方程4(x+0.3)=4.8 1.2x-0.8x=9.6 20+x=36 7x-55=59 0.7x=4.2 （10-7.5）x=1X×1.8=0.972 0.06×X=1.02 X÷0.13=0.712.4÷X=31十、列式计算（1）一个数的25倍是37.75，这个数是多少？（2）比47.88与3.8的商大42.5的数是多少？（3）1.25乘4.2减5，差是多少？（4）比4.7的1.5倍多3.05的数是多少？（5）一个数的25倍是37.5，这个数是多少？（6）比47.88与3.8的商大42.5的数是多少？（7）60比一个数的3倍少30，这个数是多少？（8）一个数的4倍比60多24，这个数是多少？（9）用14.81与5.19的和，乘以它们的差，积是多少？（10）126.8与15.7的和，乘以1.02，积是多少？（11）0.6乘0.8的积加上0.12后，再除以1.2，商是多少？十一、应用题（1）工程队开凿一条长0.7千米的隧道，原来每天开凿0.024千米，开凿了15天。

(完整版)小学四五年级数学计算题练习500题25.6 - (0.23 + 5.6) - 1.7713.75 - (4.75 + 6.48)7.83 + 2.34 - 0.83 + 6.6625.48 - (9.4 - 0.52)48.4 + 2.78 + 51.6 - 0.783.82 + 2.9 + 0.18 + 9.135.6 - 1.8 - 15.6 - 7.27.3 + 2.7 - 7.3 + 2.723.4 + 0.8 - 13.4 - 7.25.93 + 0.19 + 2.814.8 + 8.63 +5.2 + 0.373.07 - 0.38 - 1.621.27 + 3.9 + 0.73 + 15.1132.44 - (58.74 + 19.44)3.25 + 2.76 + 1.75 5.84 - 1.8 - 3.27.5 + 4.8 - 6.513.75 - (3.75 + 6.48) 13.45 - 4.68 + 2.55 7.14 - 0.53 - 2.47 47.8 - 7.45 + 8.23 6.8 - 4.5 + 6.98 49.8 - 9.6 + 8.87.5 + 4.9 - 6.315.2 - 6.8 - 3.450.13 + 2.66 + 0.8 3.45 + 1.79 + 0.65 1.76 + 0.65 + 3.24 4.85 + 8.63 + 0.37 36.54 - 1.76 - 8.66 23.4 + 3.4 - 0.238 - 2.45 - 1.026.02 + 3.6 + 1.987.5 + 4.9 - 6.536.8 - 3.9 - 6.88 3.28 + 1.79 + 0.59 23.4 - 0.8 + 13.4 1.29 + 3.7 + 2.71 9 - 2.45 - 1.6532 + 4.9 - 8.65.93 + 0.49 + 2.06一、乘法：5.6 × 2.93.77 × 1.80.02 × 9655.22 × 0.399.99 × 0.0244.67 × 0.94.88 × 2.91.38 × 5.15 × 2.445.61 × 4.38.78 × 8 1.66 × 6.1 8.9 × 2.4 2.6 × 61 9.4 × 0.02 5.5 × 55 0.05 × 0.2 5.6 × 6.5 9.77 × 0.02 4.8 × 1.75 7 × 5.79 9.46 × 2.81 7.8 × 6.41.5 × 4.92.5 × 0.88 5.5 × 5.2 2.22 ×3.33二、除法：（循环小数的用简便方法，除不尽保留2位小数）85.44 ÷ 1642.6 ÷ 7101.7 ÷ 0.00121.24 ÷ 360.736 ÷ 2343.5 ÷ 126.21 ÷ 0.0321 ÷ 1.45 - Delete this paragraph as it is not a complete sentence.3 ÷ 0.27 - Rewrite as "Divide 3 by 0.27."6.02 × 0.3 - Rewrite as "Multiply 6.02 by 0.3."7.5 ÷ 0.15 - Rewrite as "Divide 7.5 by 0.15."35.21 ÷ 7 - Rewrite as "Divide 35.21 by 7."91.2 ÷ 3.8 - Rewrite as "Divide 91.2 by 3.8."6.78 × 8 - Rewrite as "Multiply 6.78 by 8."30.66 ÷ 6 - Rewrite as "Divide 30.66 by 6."39.6 ÷ 24 - Rewrite as "Divide 39.6 by 24."0.756 ÷ 0.18 - Rewrite as "Divide 0.756 by 0.18."0.66 ÷ 0.31 - Rewrite as "Divide 0.66 by 0.31."1.97 ÷ 1.56 - Rewrite as "Divide 1.97 by 1.56."9.6 ÷ 2.93 - Rewrite as "Divide 9.6 by 2.93."8.4 ÷ 0.8 - Rewrite as "Divide 8.4 by 0.8."5 ÷ 0.06 - Rewrite as "Divide 5 by 0.06."82 ÷ 1 - Rewrite as "Divide 82 by 1."0.396 ÷ 1.2 - Rewrite as "Divide 0.396 by 1.2."20.8 ÷ 0.9 - Rewrite as "Divide 20.8 by 0.9." 14.36 ÷ 2.7 - Rewrite as "Divide 14.36 by 2.7."0.756 ÷ 0.36 - Rewrite as "Divide 0.756 by 0.36."76.4 ÷ 5.4 - Rewrite as "Divide 76.4 by 5.4."8.33 ÷ 6.2 - Rewrite as "Divide 8.33 by 6.2."4.7 ÷ 3 - Rewrite as "Divide 4.7 by 3."1.7 ÷ 0.03 - Rewrite as "Divide 1.7 by 0.03." 15.6 × 13 - Rewrite as "Multiply 15.6 by 13."1.25 ÷ 1.2 - Rewrite as "Divide 1.25 by 1.2."2.41 ÷ 0.7 - Rewrite as "Divide 2.41 by 0.7."0.18 × 15 - Rewrite as "Multiply 0.18 by 15." 0.025 × 14 - Rewrite as "Multiply 0.025 by 14."3.06 × 36 - Rewrite as "Multiply 3.06 by 36." 0.04 × 0.12 - Rewrite as "Multiply 0.04 by 0.12."3.84 × 2.6 ≈ 5.76 × 3 - Rewrite as "Calculate the approximate product of 3.84 and 2.6, then multiply the result by 5.76 and 3."16.9 ÷ 0.13 - Rewrite as "Divide 16.9 by 0.13."5.2 × 0.6 - Rewrite as "Multiply 5.2 by 0.6."5.25 × 5 - Rewrite as "Multiply 5.25 by 5."4 - Delete this paragraph as it is not a complete sentence.7.15 × 22 - Rewrite as "Multiply 7.15 by 22."1.55 ÷ 3.9 - Rewrite as "Divide 1.55 by 3.9."8.4 × 1.3 - Rewrite as "Multiply 8.4 by 1.3."35.4 × 4.2 - Rewrite as "Multiply 35.4 by 4.2."90.75 ÷ 3.3 - Rewrite as "Divide 90.75 by 3.3."3.7 × 0.016 - Rewrite as "Multiply 3.7 by 0.016."6.4 × 0.5 - Rewrite as "Multiply 6.4 by 0.5."0.042 × 0.54 - Rewrite as "Multiply 0.042 by 0.54."3.68 × 0.25 - Rewrite as "Multiply 3.68 by 0.25."0.8 - Delete this paragraph as it is not a complete sentence.4.48 × 0.4 - Rewrite as "Multiply 4.48 by 0.4."0.76 × 0.32 - Rewrite as "Multiply 0.76 by 0.32."13.76 × 0.25 × 0.046 - Rewrite as "Multiply 13.76 by 0.25, ___ the result by 0.046."2.52 ×3.4 - Rewrite as "Multiply 2.52 by 3.4."1.08 × 25 - Rewrite as "Multiply 1.08 by 25."0.12 × 0.5 × 0.16 - Rewrite as "Multiply 0.12 by 0.5, then multiply the result by 0.16."4.8 × 0.25 - Rewrite as "Multiply 4.8 by 0.25."2.5 ÷ 0.7 - Rewrite as "Divide 2.5 by 0.7."10.75 ÷ 12.5 - Rewrite as "Divide 10.75 by 12.5 and check the result using ___."0.125 × 1.4 - Rewrite as "Multiply 0.125 by 1.4."10.1 ÷ 3.3 - Rewrite as "Divide 10.1 by 3.3 and write the quotient as a recurring decimal."3.25 × 9.04 - Rewrite as "Multiply 3.25 by 9.04 and check the result using n."25 × 86.2 × 45 × 86.2 × 0.4 - Rewrite as "Multiply 25, 86.2, 45, and 0.4 together, then multiply the result by 86.2."36 × 15 × 236 × 1.5 × 0.2 - Rewrite as "Multiply 36, 15, 236, 1.5, and 0.2 ___."45 × 102 - Rewrite as "Multiply 45 by 102."34 × 27 + 34 × 73 - Rewrite as "Multiply 34 by the sum of 27 and 73."86 × 99 + 86 - Rewrite as "Multiply 86 by 99, then add 86 to the result."125 × 88 - Rewrite as "Multiply 125 by 88."45 × 10.2 - Rewrite as "Multiply 45 by 10.2."34 × 2.7 + 34 × 7.3 - Rewrite as "Multiply 34 by the sum of 2.7 and 7.3."8.6 × 99 + 8.6 - Rewrite as "Multiply 8.6 by 99, then add 8.6 to the result."1.25 × 8.8 - Rewrite as "Multiply 1.25 by 8.8."6.9 + 4.8 + 3.1 - Rewrite as "Add 6.9, 4.8, and 3.1."0.456 + 6.22 + 3.78 - Rewrite as "Add 0.456, 6.22, and 3.78."15.89 + (6.75 - 5.89) - Rewrite as "Calculate the difference een 6.75 and 5.89, then add the result to 15.89."4.02 +5.4 + 0.98 - Rewrite as "Add 4.02, 5.4, and 0.98."5.17 - 1.8 - 3.21 - Rewrite as "Subtract 1.8 from 5.17, then subtract 3.21 from the result."3.75 - (3.75 + 6.48) - Rewrite as "Add 3.75 and 6.48, then subtract the result from 3.75."3.68 + 7.56 - 2.68 - Rewrite as "Add 3.68 and 7.56, then subtract 2.68 from the result."7.85 + 2.34 - 0.85 + 4.66 - Rewrite as "Add 7.85, 2.34, and 4.66, then subtract 0.85 from the result."3.82 + 2.9 + 0.18 + 9.1 - Rewrite as "Add 3.82, 2.9, 0.18, and 9.1."9.6 + 4.8 - 3.6 - Rewrite as "Add 9.6 and 4.8, then subtract 3.6 from the result."5.27 + 2.86 - 0.66 + 1.63 - Rewrite as "Add 5.27 and 2.86, then subtract 0.66 and add 1.63 to the result."13.35 - 4.68 + 2.65 - Rewrite as "Subtract 4.68 from 13.35, then add 2.65 to the result."35.6 - 1.8 - 15.6 - 7.2 - Rewrite as "Subtract 1.8 from 35.6, then subtract 15.6 and 7.2 from the result."7.14 - 0.53 - 2.47 - Rewrite as "Subtract 0.53 and 2.47 from 7.14."3.07 - 0.38 - 1.62 + 1.29 + 3.7 + 2.71 + 6.3 = 15.076.02 + 3.6 + 1.98 = 11.67.5 + 4.9 - 6.5 = 6.98 - 2.45 - 1.55 = 43.25 + 1.79 - 0.59 + 1.75 = 6.223.4 - 0.8 - 13.4 - 7.2 = 1.00.32 × 403 = 129.763.2 + 0.36 +4.8 + 1.64 = 10.01.23 + 3.4 - 0.23 + 6.6 = 11.00.25 × 36 = 9.012.7 - (3.7 + 0.84) = 8.167.6 × 0.8 + 0.2 × 7.6 = 6.081.28 × 8.6 + 0.72 × 8.6 = 13.82436.54 - 1.76 - 4.54 = 30.240.85 × 199 = 169.1512.5 × 0.96 × 0.8 = 9.60.25 × 0.73 × 4 = 0.730.25 × 8.5 × 4 = 8.510.4 - 9.6 × 0.35 = 7.040.8 × (4.3 × 1.25) = 4.33.12 + 3.12 × 99 = 618.2428.6 × 101 - 28.6 = 2885.40.86 × 15.7 - 0.86 × 14.7 = 0.862.4 × 102 = 2442.31 × 1.2 × 0.5 = 1.38614 - 7.32 - 2.68 + 2.64 + 8.67 + 7.36 + 11.33 = 34.070 ÷ 28 = 2.5(2.5 - 0.25) × 0.4 = 0.916.16 × 1.5 - 0.5 × 9.16 = 22.84 3.6 - 3.6 × 0.5 = 1.863.4 ÷ 2.5 ÷ 0.4 = 63.44.9 ÷ 1.4 = 3.53.9 ÷ (1.3 × 5) = 0.6(7.7 + 1.54) ÷ 0.7 = 12.22.5 × 2.4 = 6.02.7 ÷ 45 = 0.0615 ÷ (0.15 × 0.4) = 625.00.35 × 1.25 × 2 × 0.8 = 0.74.5 ÷ 1.8 = 2.54.2 ÷ 3.5 = 1.2930 ÷ 0.6 ÷ 5 = 310.03.29 + 0.73 + 2.27 = 6.2932.4 × 0.9 + 0.1 × 32.4 = 29.16 3.29 - 0.73 - 2.27 = 0.2915 ÷ 0.25 = 60.07.5 + 2.5 - 7.5 + 2.5 = 5.07.325 - 3.29 - 3.325 = 0.71 7.325 - (5.325 + 1.7) = 0.3 7.325 - (5.325 - 1.7) = 3.73.29 + 0.73 - 2.29 + 2.27 =4.0 0.25 × 0.28 = 0.070.25 × 4 ÷ 0.25 × 4 = 43.29 × 0.25 × 4 = 3.290.125 × 3.2 × 2.5 = 0.83.5 × 9.9 = 34.650.125 × 8.8 = 1.135 × 40.2 = 1407.03.5 × 99 + 3.5 = 347.53.5 × 101 - 3.5 = 350.03.5 × 9.9 + 3.5 × 0.1 = 34.85 3.5 × 2.7 + 35 × 0.7 = 45.953.5 × 2.7 - 3.5 × 0.7 = 8.054.9 ÷ 3.5 = 1.47.35 ÷ (7.35 × 0.25) = 16.0 (32 + 5.6) ÷ 0.8 = 45.07 ÷ 0.25 ÷ 4 = 7.03.5 ÷ 0.6 - 0.5 ÷ 0.6 =4.677 ÷ 0.125 = 56.07.35 ÷ (7.35 ÷ 0.25) = 0.251. (78+61)+39 = 1782. 700-82-18 = 6003. 348+163+242+410+537 = 17004. 125×47-47×25 = 25005. 201×316 =6. 374-205+226-95 = 3007. 3000-999 = 20018. 997×7+21 = 69709. 87×470+870×53 =10. (55+55+55+55×5)×125 =11. 125×(8+40)×25 =12. 99+49×99 = 490813. 264×97+4×264 =14. ___×999+545 =15. 9999×36+6666×3×32 =16. 124×38+65×124+76×110-76×7 =17. 62×4+44×5+5×18 = 40818. 3400-62×34-38×20-38×14 = 183619. 1992×1991-1991×1990 = 1991458+251+749-196-26-748÷25÷4 = 458+251+749-196-6 = 1256536-249-1368-13+569-213+48 = 16846×32+46×68 = 322494×99+×482-482 = xxxxxxx16×29+16×48+16×23 = 214456×125 = 700048×25 = 120099×28 = 2772101×59 = 5959102×43 = 4398144÷24 = 6136-48-36-417-138-622-46+178 = -973 437-(137+59) = 241252-(63-48) = 2373000÷125÷8 = 3.751080÷(9×3) = 40。

简便计算题：1)6.9＋4.8＋3.10.456＋6.22＋3.7815.89＋(6.75－5.89)2)4.02＋5.4＋0.98 5.17－1.8－3.213.75－(3.75—6.48)3)3.68＋7.56－2.687.85＋2.34－0.85＋4.6635.6－1.8－15.6－7.24)3.82＋2.9＋0.18＋9.19.6＋ 4.8－3.67.14－0.53－2.475)5.27＋2.86－0.66＋1.6313.35－4.68＋2.6573.8－1.64－13.8－5.366)47.8－7.45+8.80.398+0.36+3.6415.75+3.59－0.59+14.257)66.86－8.66－1.340.25 ×16.2×4(1.25－0.125) 8×8)3.6 ×102 3.72 ×3.5＋6.28 ×3.5 36.8－3.9－6.19)28.6 ×101－28.6 4.8 ×7.8＋78×0.52 32 ＋ 4.9－0.910) 4.8 ×100.156.5 ×9.9＋56.57.09 ×10.8－0.8×7.0911)25.48－(9.4－0.52) 4.2÷3.5320 ÷1.25 ÷812) 18.76 ×9.9＋18.763.52 ÷2.5÷0.43.9－4.1＋ 6.1－5.913) 5.6 ÷3.59.6 ÷0.8÷0.44.2 ×99＋4.214) 17.8 ÷(1.78 4×)0.49÷1.41.25 ×2.5×3215) 15.2 ÷0.25 ÷40.89×100.1146.5－(23＋46.5)16) 3.83 ×4.56＋3.83 ×5.444.36 ×12.5×89.7 ×99＋9.717) 27.5 ×3.7－7.5 ×3.78.54 ÷2.5÷0.40.65×101(45.9－ 32.7) 8÷÷0.125 3.14 ×0.68＋ 31.4 ×0.032 5.6 ÷1.25 ÷0.8 ÷2.5 ÷0.47.2 ×0.2＋ 2.4 ×1.48.9 ×1.017.74 ×(2.8－1.3)＋ 1.5×2.263.9 ×2.7＋ 3.9 ×7.3 18－ 1.8 ÷0.125 ÷0.8 12.7 ×9.9＋1.2721×(9.3－3.7)－ 5.6 15.02-6.8-1.02 5.4 ×11-5.42.3 ×16+2.3 ×23+2.3 9.43-( 6.28-1.57 )3.65 ×4.7－36.5 ×0.3746×57＋23×86 13.7 ×0.25－ 3.7 ÷4 2.22 ×9.9+6.66 6×.7101 ×0.87-0.91 8×7 10.7 ×16.1-15.1 1×0.7 0.79 ×1992.35+1.713+0.287+7.651.57+0.245+7.43 6.02+3.6+1.980.134+2.66+0.8661.27+3.9+0.73+16.17.5＋4.9－6.53.07－0.38－1.621.29＋3.7＋2.71＋6.38－2.45－1.5518) 19) 20) 21) 22) 23) 24) 25) 26)27)28)4.8+8.63+5.2+0.375.93+0.19+2.81 1.76+0.195+3.2429)3.25＋1.79－0.59＋1.7523.4－ 0.8 － 13.4－ 7.2 0.32 ×4035.65×1.8+4.35×1.8 2.5×1.25×3.2 63×10.130)3.2＋0.36＋4.8＋1.64 1.23＋3.4－0.23＋6.60.25 ×3631) 12.7－( 3.7＋0.84) 36.54－1.76－4.540.25 ×0.73 ×432) 7.6 ×0.8＋0.2 ×7.60.85×1990.25 ×8.5 ×433) 1.28 ×8.6＋ 0.72 ×8.6 12.5 ×0.96 ×0.8 10.4－ 9.6 ×0.3534) 0.8 ×(4.3 ×1.25) 3.12＋3.12 ×998.7×10.1 7.06×2.4－5.7 6.35÷0.8÷1.252.5×6.8×0.4 2.5×3.2×1.25 21.36÷0.8×2.9102×0.45 8.27＋7.52＋1.73－3.520.79×99＋0.790.15＋ 0.75× 1872＋8÷2.5－30.22.8×3.2＋3.2×7.29.76×0.72－0.76×0.72+0.72 12.6×99 90÷25÷44.05÷0.5+10.75 21.6÷0.8－1.2×56.8×2.7+2.7×3.223.4÷7.8－2.35.4+4.6×150.84÷7+0.36×828.3×0.1×2. 758.36×0.5＋18.21.01×8.50.79×98＋0.79 ×20.48×1.250.25×5.8×0.48.4×6.9÷(6.44－4.14)0.38×102 4.8÷2.5÷40.65×101 4.12－1.78－1.223.6+6.4×1. 59.76×0.72－0.76×0.72+0.72 12.6×99 90÷25÷4比种松树的 4 倍少50 棵，林场种松树多少1. 林场种杨树350 棵，棵？2. 爷爷今年76岁了，比孙子年龄的6倍还大4岁。