简单的有理数混合运算 很简单的所以懒得检查了=-=过程什么的无所谓 有答案就可以了①8-(-4)÷2²×3②(
3个回答

①8-(-4)÷2²×3

=8+4÷4×3

=8+3

=11

②(-3)³÷(-3)÷9

=9÷(-3)÷9

=-1/3

③7×3²÷3+(-3)

=7×9÷3-3

=21-3

=18

④-5+16-16÷(-2)³

=-5+16-16÷(-8)

=11+2

=13

⑤(-28)÷(-6+4)+(-1)×5

=-28÷(-2)-5

=14-5

=9

⑥2÷(-2)+0÷7-(-8)×(-2)

=-1+0-16

=-17

⑦3×4²+80÷5÷2³-27

=3×16+16÷8-27

=48+2-27

=50-27

=23

⑧12²÷(-3)²×(-2)³-(-9)²÷3³

=144÷9×(-8)-81÷9

=16×(-8)-9

=-128-9

=-137

⑨-5+28÷(-2)×(-14)

=-5-14×(-14)

=-5+196

=191

⑩-2³÷4×(-5)²

=-8÷4×25

=-2×25

=-50