问题
解答题
口算
|
答案
400÷50=8, | 27×30=810, | 631-198=433, | 125×5×8=5000, |
33+67=100, | 720÷90=8, | 90×40=3600, | 18×5+4=94, |
350÷70=5, | 80×120=9600, | 29×200=5800, | (60×25)×4=6000. |
口算
|
400÷50=8, | 27×30=810, | 631-198=433, | 125×5×8=5000, |
33+67=100, | 720÷90=8, | 90×40=3600, | 18×5+4=94, |
350÷70=5, | 80×120=9600, | 29×200=5800, | (60×25)×4=6000. |