Question

15．直接寫出得數(shù)．

0.67+4.5=	1+2%=	$\frac{1}{5}$+5÷$\frac{1}{5}$+5=	9×$\frac{6}{7}$+9×$\frac{1}{7}$=
2÷$\frac{1}{8}$=	0.32÷4=	1.25×$\frac{1}{3}$×8=	16×（$\frac{1}{4}$-0.25）=

Answer 1

分析 根據(jù)小數(shù)和分?jǐn)?shù)加減乘除法運(yùn)算的計(jì)算法則計(jì)算即可求解．注意9×$\frac{6}{7}$+9×$\frac{1}{7}$根據(jù)乘法分配律計(jì)算，1.25×$\frac{1}{3}$×8變形為1.25×8×$\frac{1}{3}$計(jì)算．

解答 解：

0.67+4.5=5.17	1+2%=1.02	$\frac{1}{5}$+5÷$\frac{1}{5}$+5=30$\frac{1}{5}$	9×$\frac{6}{7}$+9×$\frac{1}{7}$=9
2÷$\frac{1}{8}$=16	0.32÷4=0.08	1.25×$\frac{1}{3}$×8=3$\frac{1}{3}$	16×（$\frac{1}{4}$-0.25）=0

點(diǎn)評(píng) 考查了小數(shù)和分?jǐn)?shù)加減乘除法運(yùn)算，關(guān)鍵是熟練掌握計(jì)算法則正確進(jìn)行計(jì)算．