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[小学三年级] 2011年西师版小学数学三年级上册两三位数乘一位数练习题_小学试卷

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发表于 2022-11-12 18:51:14 | 显示全部楼层 |阅读模式

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           估算下面各题(中间一步,以后熟练了,就可以不写出来。)
21×2≈ × = 32×2≈ × =
43×2≈ × = 54×2≈ × =
56×2≈ × =  57×2≈ × =
58×2≈ × =   59×2≈ × =
31×3≈ × = 42×3≈ × =
53×3≈ × = 64×3≈ × =
76×3≈ × = 87×3≈ × =
98×3≈ × = 99×3≈ × =
41×4≈ × = 52×4≈ × =
63×4≈ × = 74×4≈ × =
86×4≈ × = 97×4≈ × =
98×4≈ × = 99×4≈ × =
51×5≈ × = 62×5≈ × =
73×5≈ × = 84×5≈ × =
96×5≈ × = 97×5≈ × =
98×5≈ × = 99×5≈ × =
61×6≈ × = 62×6≈ × =
73×6≈ × = 74×6≈ × =
86×6≈ × = 97×6≈ × =
98×6≈ × = 99×6≈ × =
71×7≈ × = 82×7≈ × =
93×7≈ × = 94×7≈ × =
96×7≈ × = 97×7≈ × =
98×7≈ × = 99×7≈ × =
81×8≈ × = 82×8≈ × =
83×8≈ × = 84×8≈ × =
86×8≈ × = 87×8≈ × =
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