题干
怎样简便就怎样计算
①3.26×5.3+0.74×5.3
②
×2.7+6.3÷5+
| 1 |
| 5 |
| 1 |
| 5 |
③
+（1.6+
）×10
| 1 |
| 3 |
| 4 |
| 5 |
④1.25×2.8× 1914
．
答案(点此获取答案解析）
解：①3.26×5.3+0.74×5.3
=（3.26+0.74）×5.3
=4×5.3
=21.2；
②
×2.7+6.3÷5+
| 1 |
| 5 |
