分数加法和减法专项练习 (2)

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分数加法和减法专项练习 (2)

2 1 + 3 1 = 2 1 - 4 1 = 5 2 - 5 1 = 7 4 - 7 1 = 8 7 - 8 3 = 10 1 + 5 2 = 6 5 - 3 2 = 3 1 + 5 1 = 5 4 - 5 2 = 6 1 + 3 1 = 2 1 - 8 1 = 8 3 + 8 3 = 2 1 - 5 1 = 7 4 + 7 3 = 1- 8 7 = 6 5 + 6 5 = 1- 12 5 = 5 3 + 2 1 = 10 9 - 10 3 = 7 5 - 7 5 = 8 3 + 8 5= 6 1 + 12 7 = 4 1 + 4 3 = 7 3 + 2 1 = 10 9 - 2 1 = 10 9 - 5 3 = 3 2 - 6 1 = 5 4 - 10 3 = 19 7 + 19 11 = 12 5 - 12 1 = 6 5 + 3 1 = 5 1 - 6 1 = 6 1 + 4 1 = 7 1 - 8 1 = 8 1 + 8 1 = 8 3 - 3 1 = 9 5 + 9 4 = 9 5 — 3 1 = 5 4 - 3 2 = 2 1 - 12 5 = 6 5 - 3 2 = 2 1 +0.4= 2 1 -0.5= 0.2+ 10 1 = 8 3 + 2 1 = 9 8 - 3 1 = 5 4 - 3 1 = 6 1 + 8 1 = 5 12+3 4+ 1 12 7 10-3 8-1 8 4 15+5 6 1 2-(3 4-3 8 ) 5 6-(1 3+ 3 10 ) 2 3+5 6
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