题目
题型：解答题难度：一般来源：不详
| 1 |
| 2 |
| 2 |
| 5 |
②50%÷
| 2 |
| 3 |
| 3 |
| 4 |
③
| 5 |
| 12 |
| 7 |
| 12 |
| 2 |
| 3 |
④(6.7×60%+3.3×60%)÷
| 1 |
| 4 |
⑤10×(
| 8 |
| 5 |
| 3 |
| 8 |
答案
| 1 |
| 10 |
| 100 |
| 80 |
=1；
②原式=
| 1 |
| 2 |
| 3 |
| 2 |
| 3 |
| 4 |
| 3 |
| 8 |
=
| 9 |
| 16 |
| 3 |
| 8 |
=
| 3 |
| 16 |
③原式=
| 5 |
| 12 |
| 12 |
| 7 |
| 2 |
| 3 |
=
| 5 |
| 7 |
| 2 |
| 3 |
=
| 1 |
| 21 |
④60%（6.7+3.3）×4
=60%×10×4
=24；
⑤原式=10×（
| 8 |
| 5 |
| 3 |
| 8 |
| 8 |
| 3 |
=10×（
| 8 |
| 5 |
=10×
| 3 |
| 5 |
=6．
核心考点
试题【①8×(12-25)÷80%②50%÷23×34-37.5%③512÷712-23④(6.7×60%+3.3×60%)÷14⑤10×(85-38÷37.5%)．】；主要考察你对有理数的混合运算等知识点的理解。[详细]
举一反三
①-1-1=-2 ②-（-2）3=8 ③（-1
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| 1 |
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| 1 |
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| A．1个 | B．2个 | C．3个 | D．4个 |
| 50! |
| 48! |
A．
| B．49！ | C．2450 | D．0.2！ |
（1）-12006-[5×（-2）-（-2）]；
（2）(
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| 3 |
| 3 |
| 7 |
| 1 |
| 42 |
| 1 |
| 3 |
| 1 |
| 2 |