347+(126-78)简便计算
问题描述:
347+(126-78)简便计算
答
347+(126-78)
=347+130-82
=477-82
=395 叶涛解
答
347+126-78
=300+40+7+100+20+6-70-8
=(300+100)+(40+20-70)+(7+6-8)
=400-10+5
=390+5
=395
答
347+(126-78)
=350-3+130-4-80+2
=350+130-80-5
=400-5
=395