Bài 14: LUYỆN TẬP CHUNG
1. Tính:
a) $\frac{7}{9}$ x $\frac{4}{5}$ = ....................................................................................
b) 2 $\frac{1}{4}$ x 3 $\frac{2}{5}$ = ....................................................................................
c) $\frac{1}{5}$ : $\frac{7}{8}$ = ....................................................................................
d) 1 $\frac{1}{5}$ : 1 $\frac{1}{3}$ = ....................................................................................
2. Tìm $x$:
a) $x$ + $\frac{1}{4}$ = $\frac{5}{8}$
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b) $x$ - $\frac{3}{5}$ = $\frac{1}{10}$
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c) $x$ + $\frac{2}{7}$ = $\frac{6}{11}$
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d) $x$ : $\frac{3}{2}$ = $\frac{1}{4}$
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3. Viết các số đo độ dài:
1m 75cm = ........................................................................................................
5m 36cm = ........................................................................................................
8m 8cm = ........................................................................................................
4. Viết số tự nhiên thích hợp vào chỗ chấm:
a) 5 $\frac{1}{200}$ km = .......... km ........ m
b) 3 $\frac{6}{500}$ kg = .......... kg ........ g