Question

14．直接寫出計算結(jié)果．

3×1.16=	5.79+2.63+4.21=	0.25×12=	1.25×4=
0.25÷0.5=	0.32÷0.04=	6.5-5=	1.35×6=
8.4÷2=	9.66÷3+0.78=

Answer 1

分析 根據(jù)小數(shù)加減乘除法運算的計算法則計算即可求解．注意5.79+2.63+4.21根據(jù)加法交換律和結(jié)合律計算，0.25×12變形為0.25×4×3計算．

解答 解：

3×1.16=3.48	5.79+2.63+4.21=12.63	0.25×12=3	1.25×4=5
0.25÷0.5=0.5	0.32÷0.04=8	6.5-5=1.5	1.35×6=8.1
8.4÷2=4.2	9.66÷3+0.78=4

點評 考查了小數(shù)加減乘除法運算，關(guān)鍵是熟練掌握計算法則正確進行計算．