5.72
a-b-c = a -(b+c)
10 - 0.432 - 2.568 9.3 - 5.26 - 2.74
14.9-(5.2+4.9) 18.32 - 5.47 - 4.32
(a × b)×c = a ×(b × c)
25 × 6.8 × 0.04 0.25 × 32 × 0.125 6.4 1.25 × 12.5
c ×(a+b)= c×a + c×b
0.45 × 201 0.58 × 10.1 50.2 × 99 4.7 9.9
× ×
简便计算练习题7
姓名 得分
3.28 × 5.7 + 6.72 × 5.7 2.1 × 99 + 2.1
23 × 0.1 + 2.3 × 9.9 0.18 +4.26 -0.18 +4.26
0.58 ×1.3 ÷ 0.58 ×1.3 7.3 ÷4 + 2.7 × 0.25
3.75 × 0.5 - 2.75 ÷ 2 5.26 × 0.125 + 2.74 ÷ 8
a ÷ b ÷ c = a ÷ (b × c)
6.3 ÷ 1.8 9.5 ÷(1.9 × 8) 12.8 ÷ (0.4 × 1.6)
930 ÷ 0.6 ÷5 63.4 ÷ 2.5 ÷ 0.4 (7.7 + 1.54)÷ 0.7
简便计算练习题8
得分 姓名
6.9+4.8+3.1 15.89+(6.75-5.89) 7.85+2.34-0.85+4.66
35.6-1.8-15.6-7.2 13.75-(3.75+6.48) 47.8-7.45+2.55
66.86-8.66-1.34 0.25×16.2×4 0.25×32 ×0.125
2 .5 ×(4 +0.4) (1.25-0.125)×8 4.8×100.1
4.2×99 56.5×9.9+56.5 7.09×10.8-0.8×7.09
3.83×4.56+3.83×5.44 3.65×4.7-36.5×0.37 5.4×11-5.4
13.7×0.25-3.7÷4 10.7×16.1-1.1×10.7 +10.7 ×5