计算 初一数学
3个回答
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(-2)²-2²-|-1/4|×(-10)²
=4-4-1/4×100
=4-4-25
=-25
1.25×﹙-3.2﹚×﹙0.5-2/3﹚÷2又2/3
=-4×(-1/6﹚÷8/3
=2/3÷8/3
=0.25
﹙-1/2+1/3﹚÷1/12+1/12÷﹙-1/2+1/3﹚
=-1/6÷1/12+1/12÷﹙-1/6﹚
=-2+(-1/2)
=-5/2
[1又7/8-(3/8+1/16-3/4)×(-4)³]÷5
=[15/8-(6/16+1/16-12/16)×(-64)]÷5
=[15/8-(-5/16)×(-64)]÷5
=[15/8-20]÷5
=145/8×1/5
=29/8
=4-4-1/4×100
=4-4-25
=-25
1.25×﹙-3.2﹚×﹙0.5-2/3﹚÷2又2/3
=-4×(-1/6﹚÷8/3
=2/3÷8/3
=0.25
﹙-1/2+1/3﹚÷1/12+1/12÷﹙-1/2+1/3﹚
=-1/6÷1/12+1/12÷﹙-1/6﹚
=-2+(-1/2)
=-5/2
[1又7/8-(3/8+1/16-3/4)×(-4)³]÷5
=[15/8-(6/16+1/16-12/16)×(-64)]÷5
=[15/8-(-5/16)×(-64)]÷5
=[15/8-20]÷5
=145/8×1/5
=29/8
追问
最后一题你在算一下 谢谢
追答
呃,错了应该是
=[15/8-20]÷5=-145/8×1/5
=-29/8
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