六年级脱式计算题100道北师大

2022-03-23 21:23:12 文档大全网 [ 字体：小中大 ] [ 阅读： ]

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北师大,年级,计算,100
脱式计算

1、1.25×(8+10)

=1.25×8+1.25×10

=10+12.5

=22.5

2、1.24+0.78+8.76

=(1.24+8.76)+0.78

=10+0.78

=10.78

3、1/2-(4/5-1/2)

=1/2+1/2-4/5

=1-4/5 =1/5

4、4800÷25÷4

=4800÷(25x4)

=4800÷100

=4800÷100 =48

5、2/5-(3/8-3/5)

=2/5+3/5-3/8

=1-3/8 =5/8

6、3/4-(3/7-1/4)

=3/4+1/4-3/7

=1-3/7 =4/7

7、3.2x0.125x2.5

=0.125x8x(0.4x2.5) =1x1 =1

8、0.4×125×25×0.8

=(0.4×25)×(125×0.8)

=10×100

=1000

9、1.25×(8+10)

=1.25×8+1.25×10

=10+12.5

=22.5

10、9123-(123+8.8)

=9123-123-8.8

=9000-8.8

=8991.2