五年级数学上册综合算式专项练习题数学计算

  • 格式:docx
  • 大小:36.83 KB
  • 文档页数:3

五年级数学上册综合算式专项练习题数学计算

一、整数运算

1. 计算:

(1)-57 + 38 + 24 = -57 + 38 + 24 = 5

(2)45 - 36 + 27 = 45 - 36 + 27 = 36

(3)82 - 47 - 19 = 82 - 47 - 19 = 16

(4)-50 + 70 - 80 = -50 + 70 - 80 = -60

(5)38 - 57 + 65 - 24 = 38 - 57 + 65 - 24 = 22

二、分数运算

1. 计算:

(1)5/6 + 2/3 = (5 × 3 + 2 × 2) / (6 × 3) = 19/18

(2)7/8 - 4/6 = (7 × 3 - 4 × 4) / (8 × 3) = 5/24

(3)3/4 × 1/2 = 3 × 1 / 4 × 2 = 3/8

(4)2/5 ÷ 1/4 = 2/5 × 4/1 = 8/5

(5)5/9 + 1/3 - 2/6 = (5 × 2 + 1 × 6 - 2 × 3) / 9 × 2 = 13/18

三、小数运算 1. 计算:

(1)0.7 + 0.5 = 1.2

(2)1.8 - 0.6 = 1.2

(3)2.4 × 1.5 = 3.6

(4)4.2 ÷ 2 = 2.1

(5)3.6 + 0.9 - 1.2 = 3.3

四、混合运算

1. 计算:

(1)8 + 5/6 - 1/2 = 8 + (5 × 2 - 1 × 3) / 6 × 2 = 8 + 7/12

(2)5/6 × 1.5 - 1/2 = (5 × 3 - 1 × 3) / 6 × 2 = 7/8

(3)2.5 - 1/4 + 0.6 = 2.5 - (1 × 2 + 1 × 4) / 4 × 2 + 0.6 = 2.9

(4)3/4 + 0.6 - 1.5 = (3 × 2 + 1 × 3 - 1 × 4) / 4 × 2 = 1/2

(5)2.5 × 1/3 + 7/8 - 1/4 = 2.5 × 1 / 4 × 3 + 7/8 - 1/4 = 2.33333333333

五、括号运算定律

1. 计算:

(1)5 × (3 - 4) + 2 ÷ (6 - 2) = 5 × (-1) + 2 ÷ (4) = -3.5

(2)4 - (7 - 5) ÷ (8 - 2) = 4 - (2) ÷ (6) = 3.33333333333 (3)6 + 8 ÷ (9 - 4) × 2 = 6 + (8) ÷ (5) × 2 = 10.4

(4)(3 + 4) ÷ 5 - (8 - 2) = (7) ÷ 5 - (6) = 0.4

(5)(6 - 5) × (3 + 2) - (8 ÷ 2) = (1) × (5) - (4) = 1

综上所述,完成了五年级数学上册综合算式专项练习题的数学计算。通过对整数运算、分数运算、小数运算、混合运算和括号运算定律的练习,学生们可以进一步巩固数学运算的基础知识,并提高计算的准确性和速度。这些练习题的完成有助于培养学生的逻辑思维和解决问题的能力,为他们今后学习更复杂的数学内容打下基础。