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简介:
1.13÷5÷0.2
=13÷(5×0.2)
=13÷1
=13
2.(2.5-0.8)×40
=2.5×40-0.8×40
=100-32
=68
3.1.25×64÷8
=1.25×(64÷8)
=1.25×8
=10
4.26÷25÷0.4
=26÷(25×0.4)
=26÷10
=2.6
5.(22.5-15)÷0.5
=22.5÷0.5-15÷0.5
=45-30
=15
6.16.8÷4÷0.5
=16.8÷(4×0.5)
=16.8÷2
=8.4
7.(8+0.4)×25
=8×25+0.4×25
=200+10
=210
8.5×1.8+6×1.8-1.8
=(5+6-1)×1.8
=10×1.8
=18
9.1.1×8+8.7×8+1.2×8
=(1.1+8.7+1.2)×8
=11×8
=88
10.7.2÷4÷0.5÷2
=7.2÷(4×0.5×2)
=7.2÷4
=1.8