Question

[(62ⅹ31 38ⅹ31)÷31 13]ⅹ20脱式计算等于多少?

Answer 1

原式=[31*(62+38)/31+13]*20
=113*20
=2260

Answer 2

[(62ⅹ31+ 38ⅹ31)÷31+ 13]ⅹ20
=【（62+38）x31÷31+13】x20
=（100x1+13）x20
=113x20
=2260