第45页

信息发布者:
180
6
4
28
216
106
900
5
15600
9360
5355
​$ \begin {aligned}&=169-69-42\\&=100-42\\&=58 \end {aligned}$​
​$ \begin {aligned} &=325+5\\&=330 \end {aligned}$​
​$ \begin {aligned}&=38.11+35.4\\&=73.51 \end {aligned}$​
​$ \begin {aligned} &=25×(4×8)×125\\&=(25×4)×(8×125)\\&=100×1000\\&=100000 \end {aligned}$​
​$ \begin {aligned} &=67×(100-1)\\&=67×100-67×1\\&=6700-67\\&=6633 \end {aligned}$​
​$ \begin {aligned} &=(158+102)×40\\&=260×40\\&=10400 \end {aligned}$​
3
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90
120
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