脱式计算,能简算的要简算. 0.25×32×0.125 57×18.5-4.5
脱式计算,能简算的要简算.0.25×32×0.12557×18.5-4.5÷7518+57+6.875+274397×99....
脱式计算,能简算的要简算. 0.25×32×0.125 57×18.5-4.5÷75 18+57+6.875+27 4397×99.
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(1)0.25×32×0.125
=(0.25×4)×(8×0.125)
=1×1
=1
(2)
×18.5-4.5÷
=
×18.5-4.5×
=
×(18.5-4.5)
=
×14
=10
(3)
+
+6.875+
=(
+6.875)+(
+
)
=(0.125+6.875)+1
=7+1
=8
(4)
×99
=
×(97+2)
=
×97+2×
=43+
=43
=(0.25×4)×(8×0.125)
=1×1
=1
(2)
5 |
7 |
7 |
5 |
=
5 |
7 |
5 |
7 |
=
5 |
7 |
=
5 |
7 |
=10
(3)
1 |
8 |
5 |
7 |
2 |
7 |
=(
1 |
8 |
5 |
7 |
2 |
7 |
=(0.125+6.875)+1
=7+1
=8
(4)
43 |
97 |
=
43 |
97 |
=
43 |
97 |
43 |
97 |
=43+
86 |
97 |
=43
86 |
97 |
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