Question

小学六年级数学题能简算的要简算

23X5/22

1/2-5/6X1/2

(5/12-7/18)X36

3/4X8/9-1/3

7/9+7/9X8

5/8X7-5/8X3

Answer 1

最后一题等于5/2

Answer 2

23X5/22
=115/22(五又二十二分之五)
1/2-5/6X1/2
=1/2×(1-5/6)
=1/2×1/6
=1/12
5/12-7/18)X36
=5/12×36-7/18×36
=15-14
=1
3/4X8/9-1/3
=2/3-1/3
=1/3
7/9+7/9X8
=7/9×(1+8)
=7/9×9
=7
5/8X7-5/8X3
=5/8×(7-3)
=5/8×4
=5/2
=2.5

Answer 3

23X5/22=（1+22）X5/22=5/22+5=5又5/22
1/2-5/6X1/2=（1-5/6）X1/2=1/12
(5/12-7/18)X36=5/12X36-7/18X36=15-14=1
3/4X8/9-1/3=2/3-1/3=1/3

7/9+7/9X8=7/9(1+8)=7
5/8X7-5/8X3=5/8(7-3)=5/2=2又1/2