题目内容
直接写得数. 0.6+0.4×3= |
4.2×2+0.1= |
0.8×0.2-0.06= | 3×0.2×0.5= |
2.5×0.8×0.7= | 2.5×0.4×1.6= |
分析:(1)(2)先算乘法,再算加法;
(3)先算乘法,再算减法;
(4)(5)(6)按照从左往右的顺序解答即可.
(3)先算乘法,再算减法;
(4)(5)(6)按照从左往右的顺序解答即可.
解答:解:
0.6+0.4×3=1.8; | 4.2×2+0.1=8.5; |
0.8×0.2-0.06=0.1; | 3×0.2×0.5=0.3; |
2.5×0.8×0.7=1.4; | 2.5×0.4×1.6=1.6. |
点评:此题考查了小数四则混合运算,关键是熟练掌握运算顺序和运算法则,灵活运用运算定律进行基本计算.
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