Question

стр 181 . упражнение 533.найдите значение выражение устно 1) 3 5/6 - 1 1/6 2) 8 7/9 - 5 2/9 3) 10 9/11 - 4 2/11 4) 7 2/3 ‐- 2/3 5) 4 5/8 - 3 6) 10 1/9 - 4 7) 6 5/9 - 5/9 8) 3 - 1 3/4​

Answer 1

1)

$3 \frac{5}{6} - 1 \frac{1}{6} = (3 - 1) + ( \frac{5}{6} - \frac{1}{6} ) = 2 \frac{2}{3}$

2)

$8 \frac{7}{9} - 5 \frac{2}{9} = (8 - 5) + ( \frac{7}{9} - \frac{2}{9} ) = 3 \frac{5}{9}$

3)

$10 \frac{9}{11} - 4 \frac{2}{11} = (10 - 4) + ( \frac{9}{11} - \frac{2}{11} ) = 6 \frac{7}{11}$

4)

$7 \frac{2}{3} - \frac{2}{3} = \frac{23}{3} - \frac{2}{3} = 7$

5)

$4 \frac{5}{8} - \frac{3}{6} = \frac{37}{8} - \frac{3}{6} = \frac{33}{8}$

6)

$10 \frac{1}{9} - \frac{4}{7} = \frac{91}{9} - \frac{4}{7} = \frac{601}{63}$

7)

$6 \frac{5}{9} - \frac{5}{9} = \frac{59}{9} - \frac{5}{9} = 6$

8)

$3 - 1 \frac{3}{4} = 3 - \frac{7}{4} = \frac{5}{4}$