Правильно: 98 – 25 = 63, 74 – 28 = 46, 83 – 45 = 38, 94 – 87 = 7, 65 – 33 = 32, 88 - 24 = 64, 33 - 23 = 10, 80 - 17 = 63, 37 - 20 = 17, 32 - 24 = 8, 22 - 15 = 7, 73 - 51 = 22, 38 - 12 = 26, 88 - 34 = 54, 66 - 29 = 37, 97 - 45 = 52, 30 - 27 = 3, 51 - 37 = 4, 74 - 69 = 5, 90 - 32 = 58, Неправильно: 89 – 85 =14, 90 – 46 =34, 73 – 39 =24, 66 – 28 =28, 52 – 26 =16, 92 – 34 = 48, 34 – 29 = 6, 30 – 19 = 12, 95 – 38 = 58, 45 – 18 = 28, 73 - 28 =35, 70 − 54 = 28, 93 - 32 = 71, 24 - 21 = 4, 48 - 19 = 19, 46 - 13 = 23, 31 - 23 = 9, 25 - 16 = 7, 97 - 82 = 25, 47 - 38 = 7,

Устный счет - 5.2. Разность двузначных чисел.

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