Решебник по математике 4 класс овз Алышева Часть 2. Деление на 7 Задание 9

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\[1)\ 29 + 14 = 29 + 10 + 4 =\]

\[= 39 + 4 = 43\]

\[18 + 25 = 18 + 20 + 5 =\]

\[= 38 + 5 = 43\]

\[36 + 16 = 36 + 10 + 6 =\]

\[= 46 + 6 = 52\]

\[45 + 28 = 45 + 20 + 9 =\]

\[= 65 + 9 = 74\]

\[57 + 37 = 57 + 30 + 7 =\]

\[= 87 + 7 = 94\]

\[69 + 24 = 69 + 20 + 4 =\]

\[= 89 + 4 = 93\]

\[38 + 45 = 38 + 40 + 5 =\]

\[= 78 + 5 = 83\]

\[74 + 17 = 74 + 10 + 7 =\]

\[= 84 + 7 = 91\]

\[29 + 39 = 29 + 30 + 9 =\]

\[= 59 + 9 = 68\]

\[2)\ 31 - 15 = 31 - 10 - 5 =\]

\[= 21 - 5 = 16\]

\[41 - 16 = 41 - 10 - 6 =\]

\[= 31 - 6 = 25\]

\[53 - 24 = 53 - 20 - 4 =\]

\[= 33 - 4 = 29\]

\[61 - 35 = 61 - 30 - 5 =\]

\[=\]

\(31 - 5 = 26\)=

\[74 - 27 = 74 - 20 - 7 =\]

\[= 54 - 7 = 47\]

\[82 - 44 = 82 - 40 - 4 =\]

\[= 42 - 4 = 38\]

\[95 - 56 = 95 - 50 - 6 =\]

\[= 45 - 6 = 39\]

\[41 - 37 = 41 - 30 - 7 =\]

\[= 11 - 7 = 4\]

\[74 - 68 = 74 - 60 - 8 =\]

\[= 14 - 8 = 6\]