问题
解答题
计算,能简算的要简算.
|
答案
解(1)32×0.25×1.25
=(4×8)×0.25×1.25
=(4×0.25)×(8×1.25)
=1×10
=10
(2))38×3 37
=(37+1)×3 37
=37×
+1×3 37 3 37
=3+3 37
=33 37
(3)8×
+2 9 2 9
=
×(8+1)2 9
=
×92 9
=2
(4)
÷4 5
×147 10
=
×148 7
=16
(5)4.27÷0.7×1.3
=6.1×1.3
=7.93
(6)
÷9+6 25
×6 25 8 9
×6 25
+1 9
×6 25 8 9
=
×(6 25
+1 9
)8 9
=
×16 25
=6 25