四年级数学下册运算定律练习题精选124Word文档下载推荐.docx
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954+97+10330+100+20
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100
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924-20-31-49887-87-15-85
101×
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5219×
305
8+9+10+…+25+26+27
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66
3+5+7+…+17+19+21
26-25+24-23+…+10-9+8-7
14+67-32+33+86
(99+10)+50=99+(____+____)
260+(340+87)=(260+____)+____
____+56=56+27
362-26-74=362〇(26+____)
96×
38=38×
6×
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17)=(____×
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50
278+84+81658+464+12
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10
47+74+53+26300+110+690+600
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104×
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1083×
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(12+36)+44=12+(____+____)
200+(600+64)=(200+____)+____
____+59=59+42
307-60-40=307〇(60+____)
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340×
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101
1+2+3+…+18+19+20
129×
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742+11+48927+126+23
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746-10-20-70643-243-67-33
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304
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