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小二加法(一)
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307 + 308 =? A. 516 B. 605 C. 615 D. 651
C
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公園裏有成人380人和小童192人。公園裏共有多少人?
572
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560 + 142 =? 估算: 600 + ________ = ________
100;700
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糖果屋內有126包橙汁糖和82包蘋果汁糖。糖果屋內共有糖果多少包?
208
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437 + 375 = ________
812
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589 + 214約是多少百? ________ + 200 = ________
600;800
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