简便运算如图
1个回答
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50x44+5x550+50
=50x44+50x55+50x1
=50x(44+55+1)
=50x100
=5000
480x4+53x40-4x10
=48x40+53x40-40
=(48+53-1)x40
=100x40
=4000
700x61+70x290+7000
=700x61+700x29+700x10
=700x(61+29+10)
=700x100
=70000
360x45+64x450
=36x450+64x450
=(36+64)x450
=100x450
=45000
供参考。
=50x44+50x55+50x1
=50x(44+55+1)
=50x100
=5000
480x4+53x40-4x10
=48x40+53x40-40
=(48+53-1)x40
=100x40
=4000
700x61+70x290+7000
=700x61+700x29+700x10
=700x(61+29+10)
=700x100
=70000
360x45+64x450
=36x450+64x450
=(36+64)x450
=100x450
=45000
供参考。
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