524-236+163怎么验算?
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解:524-236+163等于( 451 )
∵已知需求出524-236+163等于多少
∴524 - 236 + 163
= (500 + 24)-(200 + 36)+(200 - 37)
= 500 + 24 - 200 - 36 + 200 - 37
= (500 - 200 + 200)+(24 - 36 - 37)
= (300 + 200)+(-12 - 37)
= 500 - 49
= 451
经检验,524 = 451 - 163 + 236符合题意
答:524-236+163等于451
∵已知需求出524-236+163等于多少
∴524 - 236 + 163
= (500 + 24)-(200 + 36)+(200 - 37)
= 500 + 24 - 200 - 36 + 200 - 37
= (500 - 200 + 200)+(24 - 36 - 37)
= (300 + 200)+(-12 - 37)
= 500 - 49
= 451
经检验,524 = 451 - 163 + 236符合题意
答:524-236+163等于451
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