初一有理数混合运算计算题(加减乘除乘方)(带答案)

2024-12-30 22:34:44
推荐回答(2个)
回答1:

(-4)x4+(-9)x2
=(-16)+(-18)
=-34
(-1)³x(-6x½)
=(-1)x(-3)
=3
9¾x(-7)
=10x(-7)-¼x(-7)
=-70-1¾
=68¼
2²x[(-7)x(-3²)]
=4x[(-7)x(-9)]
=4x63
=252
-7²-(-6)²x(-1²)
=-49-36x(-1)
=-49-(-36)
=-13

回答2: