计算(能简便的要简便)40÷[( 3 4 - 1 3 )×3]85×0.75+15×75% 9 10
计算(能简便的要简便)40÷[(34-13)×3]85×0.75+15×75%910÷[25+(1-1011)]7.85-1.89-2.11+2.15[1-(12+16)...
计算(能简便的要简便)40÷[( 3 4 - 1 3 )×3]85×0.75+15×75% 9 10 ÷[ 2 5 +(1- 10 11 )]7.85-1.89-2.11+2.15[1-( 1 2 + 1 6 )]÷ 1 3 24×( 1 4 + 1 8 - 1 6 )
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(1)40÷[(
=40÷[
=40 ÷
=32; (2)85×0.75+15×75% =85×0.75+15×0.75, =(85+15)×0.75, =100×0.75, =75; (3)
=
=
=
(穗返4)7.85-1.89-2.11+2.15 =7.85+2.15-(1.89+2.11), =10-4, =6; (5)[1-(
=[1-
=
=1; (6)24×(
=24×
=6+3-4,猜颤饥洞碰 =5. |
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