Ответы к учебнику по математике за 2 класс 2 часть Рудницкая. Умножение числа 5. Умножение и деление на 5. Пятая часть числа. Номер №32

Выполни действия.
(53 − 29) + 16
(96 + 4) − 38
(26 + 48) + 19
(54 + 46) − 54
(47 − 13) + 47
(33 − 6) − 12
100 − (90 − 45)
37 + (61 − 19)
81 − (57 + 3)
(56 + 9) − 18
Выпиши результаты действий в порядке увеличения.

Ответ

(53 − 29) + 16 = 40
(96 + 4) − 38 = 62
(26 + 48) + 19 = 93
(54 + 46) − 54 = 46
(47 − 13) + 47 = 81
(33 − 6) − 12 = 15
100 − (90 − 45) = 55
37 + (61 − 19) = 79
81 − (57 + 3) = 21
(56 + 9) − 18 = 47
Результаты действий в порядке увеличения: 15; 21; 40; 46; 47; 55; 62; 79; 81; 93.
Вычисления:
(53 − 29) + 16 = 24 + 16 = 40

$\begin{array}{r}\begin{array}{r}—\end{array}\underline{\begin{array}{r}53\\ 29\end{array}}\\ \begin{array}{r}24\end{array}\end{array}$

$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}24\\ 16\end{array}}\\ \begin{array}{r}40\end{array}\end{array}$
(96 + 4) − 38 = 100 − 38 = 62

$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}96\\ 4\end{array}}\\ \begin{array}{r}100\end{array}\end{array}$

$\begin{array}{r}\begin{array}{r}—\end{array}\underline{\begin{array}{r}100\\ 38\end{array}}\\ \begin{array}{r}62\end{array}\end{array}$
(26 + 48) + 19 = 74 + 19 = 93

$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}26\\ 48\end{array}}\\ \begin{array}{r}74\end{array}\end{array}$

$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}74\\ 19\end{array}}\\ \begin{array}{r}93\end{array}\end{array}$
(54 + 46) − 54 = 100 − 54 = 46

$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}54\\ 46\end{array}}\\ \begin{array}{r}100\end{array}\end{array}$

$\begin{array}{r}\begin{array}{r}—\end{array}\underline{\begin{array}{r}100\\ 54\end{array}}\\ \begin{array}{r}46\end{array}\end{array}$
(47 − 13) + 47 = 34 + 47 = 81

$\begin{array}{r}\begin{array}{r}—\end{array}\underline{\begin{array}{r}47\\ 13\end{array}}\\ \begin{array}{r}34\end{array}\end{array}$

$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}34\\ 47\end{array}}\\ \begin{array}{r}81\end{array}\end{array}$
(33 − 6) − 12 = 27 − 12 = 15

$\begin{array}{r}\begin{array}{r}—\end{array}\underline{\begin{array}{r}33\\ 6\end{array}}\\ \begin{array}{r}27\end{array}\end{array}$

$\begin{array}{r}\begin{array}{r}—\end{array}\underline{\begin{array}{r}27\\ 12\end{array}}\\ \begin{array}{r}15\end{array}\end{array}$
100 − (90 − 45) = 100 − 45 = 55

$\begin{array}{r}\begin{array}{r}—\end{array}\underline{\begin{array}{r}90\\ 45\end{array}}\\ \begin{array}{r}45\end{array}\end{array}$

$\begin{array}{r}\begin{array}{r}—\end{array}\underline{\begin{array}{r}100\\ 45\end{array}}\\ \begin{array}{r}55\end{array}\end{array}$
37 + (61 − 19) = 37 + 42 = 79

$\begin{array}{r}\begin{array}{r}—\end{array}\underline{\begin{array}{r}61\\ 19\end{array}}\\ \begin{array}{r}42\end{array}\end{array}$

$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}37\\ 42\end{array}}\\ \begin{array}{r}79\end{array}\end{array}$
81 − (57 + 3) = 81 − 60 = 21

$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}57\\ 3\end{array}}\\ \begin{array}{r}60\end{array}\end{array}$

$\begin{array}{r}\begin{array}{r}—\end{array}\underline{\begin{array}{r}81\\ 60\end{array}}\\ \begin{array}{r}21\end{array}\end{array}$
(56 + 9) − 18 = 65 − 18 = 47

$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}56\\ 9\end{array}}\\ \begin{array}{r}65\end{array}\end{array}$

$\begin{array}{r}\begin{array}{r}—\end{array}\underline{\begin{array}{r}65\\ 18\end{array}}\\ \begin{array}{r}47\end{array}\end{array}$