计算:①8+(-10)+(-2)-(-5)②(-5)÷(?54)③-36÷(-6)-72÷(-8)④8×(?45)÷|-16|⑤(-24
计算:①8+(-10)+(-2)-(-5)②(-5)÷(?54)③-36÷(-6)-72÷(-8)④8×(?45)÷|-16|⑤(-24)×(-12+34?13)⑥(-1...
计算:①8+(-10)+(-2)-(-5)②(-5)÷(?54)③-36÷(-6)-72÷(-8)④8×(?45)÷|-16|⑤(-24)×(-12+34?13) ⑥(-12)+(?34)-(-134)+(+1.5)⑦18×(?23)+13×23-4×23 ⑧-32-[1-(-2)3]÷(-3)
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精武堂419
推荐于2016-04-25
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①8+(-10)+(-2)-(-5)
=8-10-2+5
=1;
②(-5)÷(
?)=4;
③-36÷(-6)-72÷(-8)
=6+9
=15;
④8×(
?)÷|-16|
=8×(
?)÷16
=-10÷16
=-
;
⑤(-24)×(-
+?)
=12-18+8
=2;
⑥(-
)+(
?)-(-1
)+(+1.5)
=(-
+1.5)+(
?+1
)
=1+1
=2;
⑦18×(
?)+13×
-4×
=(-18+13-4)×
=-9×
=-6;
⑧-3
2-[1-(-2)
3]÷(-3)
=-9-[1+8]÷(-3)
=-9-9÷(-3)
=-9+3
=-6.
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