题目内容
计算比赛
（78+22）×4
=
=
（24+36）×8
=
=
75×2+45
=
=
3×40+56
=
=
4×203+500
=
=
456×4-456
=
=
（78+22）×4
=
=
（24+36）×8
=
=
75×2+45
=
=
3×40+56
=
=
4×203+500
=
=
456×4-456
=
=
（78+22）×4
=100×4
=400；
（24+36）×8
=60×8
=480；
75×2+45
=150+45
=195；
3×40+56
=120+56
=176；
4×203+500
=812+500
=1312；
456×4-456
=1824-456
=1368．
=100×4
=400；
（24+36）×8
=60×8
=480；
75×2+45
=150+45
=195；
3×40+56
=120+56
=176；
4×203+500
=812+500
=1312；
456×4-456
=1824-456
=1368．
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