问题
解答题
①4.6×0.45
②2.4×0.76
③5.5×2.4
④7.06×2.3.
答案
①4.6×0.45=2.07;
0.45 × 4.6
. 270
180 2.070
②2.4×0.76=1.824;
0.76 × 2.4
. 304
152 1.824
③5.5×2.4=13.2;
5.5 × 2.4
. 220
110 13.20
④7.06×2.3=16.238.
7.06 × 2.3
. 2118
1412 16.238