一年级数学速算训练 (51)
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50 - 28 = 76 + 99 = 42 - 10 = 15 + 85 = 69 - 30 = 91 - 59 = 71 + 48 = 22 + 22 = 18 - 14 = 46 + 83 = 84 - 35 = 78 - 42 = 51 + 9 = 88 + 69 = 82 - 80 = 86 + 29 = 15 + 44 = 57 - 44 = 1 + 92 = 83 - 58 = 55 - 2 = 13 + 57 = 93 - 48 = 21 + 9 = 98 - 6 = 100 - 64 = 64 + 10 = 87 + 46 = 30 + 72 = 90 - 24 = 100 - 47 = 83 - 49 = 13 + 22 = 11 + 65 = 66 + 66 = 64 - 7 = 38 + 75 = 60 + 42 = 53 + 58 = 71 + 21 = 13 + 61 = 44 + 39 = 53 + 42 =
99 - 64 = 98 - 53 = 91 - 17 = 61 - 42 = 45 - 29 = 51 - 28 = 79 + 34 = 12 - 8 =
90 - 69 = 25 + 81 = 80 + 14 = 19 + 39 = 91 - 27 = 71 - 12 = 22 + 15 = 32 + 80 = 39 - 32 = 57 + 14 = 84 + 89 = 89 + 50 = 100 - 100 = 81 + 52 = 99 + 44 = 43 - 40 = 38 - 23 = 81 - 62 = 67 - 39 = 69 - 1 =
93 - 78 = 7 + 41 = 78 + 60 = 41 - 2 =
56 + 4 = 11 + 28 = 90 + 7 =