ГДЗ по математике 4 класс овз Алышева Часть 1. Сложение и вычитание чисел в пределах 100 без перехода через разряд (все случаи) Задание 38

\[\boxed{\mathbf{38}\mathbf{.}}\]

\[1)\ 27 - 17 = 27 - 10 - 7 =\]

\[= 17 - 7 = 10\]

\[34 - 24 = 34 - 20 - 4 =\]

\[= 14 - 4 = 10\]

\[55 - 35 = 55 - 30 - 5 =\]

\[= 25 - 5 = 20\]

\[57 - 27 = 57 - 20 - 7 =\]

\[= 37 - 7 = 30\]

\[46 - 26 = 46 - 20 - 6 =\]

\[= 26 - 6 = 20\]

\[61 - 51 = 61 - 50 - 1 =\]

\[= 11 - 1 = 10\]

\[75 - 55 = 75 - 50 - 5 =\]

\[= 25 - 5 = 20\]

\[86 - 36 = 86 - 30 - 6 =\]

\[= 56 - 6 = 50\]

\[92 - 22 = 92 - 20 - 2 =\]

\[= 72 - 2 = 70\]

\[2)\ 24 - 21 = 24 - 20 - 1 =\]

\[= 4 - 1 = 3\]

\[36 - 32 = 36 - 30 - 2 =\]

\[= 6 - 2 = 4\]

\[54 - 53 = 54 - 50 - 3 =\]

\[= 4 - 3 = 1\]

\[67 - 62 = 67 - 60 - 2 =\]

\[= 7 - 2 = 5\]

\[49 - 47 = 49 - 40 - 7 =\]

\[= 9 - 7 = 2\]

\[88 - 81 = 88 - 80 - 1 =\]

\[= 8 - 1 = 7\]

\[79 - 76 = 79 - 70 - 6 =\]

\[= 9 - 6 = 3\]

\[87 - 84 = 87 - 80 - 4 =\]

\[= 7 - 4 = 3\]

\[95 - 94 = 95 - 90 - 4 =\]

\[= 5 - 4 = 1\]