《2025年一步名校单元测试卷五年级数学上册冀教版》

五、脱式计算，能简算的要简算。
$6.8×0.75÷0.5$
$15+81÷0.27$
$0.125×7×8$
$6.4×7.8+7.8×3.6$
$10.25×0.25×16$
$5.09×10.7-0.7×5.09$
$2.5×0.8×4×1.25$
$0.38×56+1.2×5.6$
$0.8×(12.5+1.25)$
$3.6÷0.4+1.25×5$
$3.16×101$
$3.5×1.8÷(6.4-3.9)$
$2.5×[(3.2+1.8)÷0.02]$
$[8.6-(2.8-1.6)]÷3.7$
$[8.3-(3.6+2.9)]÷0.72$

答案： 五、 6.8×0.75÷0.5
=5.1÷0.5
=10.2
15 + 81÷0.27
=15 + 300
=315
0.125×7×8
=0.125×8×7
=1×7
=7
6.4×7.8 + 7.8×3.6
=7.8×(6.4 + 3.6)
=7.8×10
=78
10.25×0.25×16
=(10.25×4)×(0.25×4)=41×1
=41
5.09×10.7 - 0.7×5.09
=5.09×(10.7 - 0.7)
=5.09×10
=50.9
2.5×0.8×4×1.25
=(2.5×4)×(0.8×1.25)=10×1
=10
0.38×56 + 1.2×5.6
=56×(0.38 + 0.12)
=56×0.5
=28
0.8×(12.5 + 1.25)
=0.8×12.5 + 0.8×1.25
=10 + 1
=11
3.6÷0.4 + 1.25×5
=9 + 6.25
=15.25
3.16×101
=3.16×(100 + 1)
=3.16×100 + 3.16×1
=316 + 3.16
=319.16
3.5×1.8÷(6.4 - 3.9)
=3.5×1.8÷2.5
=6.3÷2.5
=2.52
2.5×[(3.2 + 1.8)÷0.02]
=2.5×(5÷0.02)
=2.5×250
=625
[8.6 - (2.8 - 1.6)]÷3.7
=(8.6 - 1.2)÷3.7
=7.4÷3.7
=2
[8.3 - (3.6 + 2.9)]÷0.72
=(8.3 - 6.5)÷0.72
=1.8÷0.72
=2.5