问题
选择题
4.8×3.9+0.39+0.39的简便算式是[ ]
A.(4.8+1+1)×3.9
B.4.8×3.9+0.39×2
C.4.8×3.9+0.1×3.9+0.1×3.9=(4.8+0.1+0.1)×3.9
答案
答案:C
4.8×3.9+0.39+0.39的简便算式是[ ]
A.(4.8+1+1)×3.9
B.4.8×3.9+0.39×2
C.4.8×3.9+0.1×3.9+0.1×3.9=(4.8+0.1+0.1)×3.9
答案:C