(37-15)×(8+160)简便计算
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(37-15)×(8+160)简便计算
(37-15)×(8+160)简便计算
(37-15)×(8+160)简便计算
(37-15)×(8+160)
=22x168
=22x(170-2)
=22x170-22x2
=3740-44
=3696
(37-15)×(8+160)=22×168=3696
(37-15)×(8+160)
=(20+2)x(170-2)
=20x170+2x170-20x20-2x2
=3400+340-40-4
=3696