题目内容
5×7+6=
[ ]
A.41 |
B.520 |
C.2400 |
D.240 |
答案:A
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例:
3÷3+3-3=1 33÷33=1(1)
① 3 3 3 3=1 |
② 3 3 3 3=2 |
③ 3 3 3 3=3 |
④ 3 3 3 3=4 |
⑤ 3 3 3 3=5 |
⑥ 3 3 3 3=6 |
⑦ 3 3 3 3=7 |
⑧ 3 3 3 3=8 |
⑨ 3 3 3 3=9 |
⑩ 3 3 3 3=10 |
(2)
① 3 3 3 3=1 |
② 3 3 3 3=2 |
③ 3 3 3 3=3 |
④ 3 3 3 3=4 |
⑤ 3 3 3 3=5 |
⑥ 3 3 3 3=6 |
⑦ 3 3 3 3=7 |
⑧ 3 3 3 3=8 |
⑨ 3 3 3 3=9 |
⑩ 3 3 3 3=10 |
① 3 3 3 3=1 |
② 3 3 3 3=2 |
③ 3 3 3 3=3 |
④ 3 3 3 3=4 |
⑤ 3 3 3 3=5 |
⑥ 3 3 3 3=6 |
⑦ 3 3 3 3=7 |
⑧ 3 3 3 3=8 |
⑨ 3 3 3 3=9 |
⑩ 3 3 3 3=10 |
38+0.06=________; | (155+20)-65=________; | 64.2+5.7=________; |
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