
怎样简便就怎样算.(1)1.5÷1.8+1.3×0.6(2)25×1.25×32(3)( 4 5 + 1 4 )
怎样简便就怎样算.(1)1.5÷1.8+1.3×0.6(2)25×1.25×32(3)(45+14)÷73+710(4)56×(47+58-34)...
怎样简便就怎样算.(1)1.5÷1.8+1.3×0.6(2)25×1.25×32(3)( 4 5 + 1 4 )÷ 7 3 + 7 10 (4)56×( 4 7 + 5 8 - 3 4 )
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(1)1.5÷1.8+1.3×0.6, =
= 1
(2)25×1.25×32, =25×1.25×8×4, =(25×4)×(1.25×8), =100×10, =1000; (3)(
=
=
=1.15; (4)56×(
=56×
=32+35-42, =67-42, =25. |
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