四年级数学下册运算定律练习题精选42Word下载.docx
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831200÷
10÷
10
928+90+1057+144+13
3000÷
125÷
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56×
5
60+78+40+22300+100+600+300
125999×
21+21
755-15-24-61842-242-84-16
301×
1425×
2818×
201
4+5+6+…+21+22+23
127×
85-27×
8597+199×
97
1+3+5+…+15+17+19
25-24+23-22+…+9-8+7-6
11+68+23+32+89
(74+41)+19=74+(____+____)
100+(500+55)=(100+____)+____
____+78=78+23
938-28-72=938〇(28+____)
55×
16=16×
90×
5=90×
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29)=(____×
772×
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220×
(5+10)
621-68-32719-39-419
36×
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4
412+40+6056+614+14
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76×
40
85+75+15+25260+360+240+440
64×
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101×
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301
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42
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(89+32)+58=89+(____+____)
170+(830+89)=(170+____)+____
____+73=73+13
986-17-83=986〇(17+____)
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506
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66
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(23+12)+88=23+(____+____)
300+(400+29)=(300+____)+____
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767-19-81=767〇(19+____)
92×
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797+56+64432+637+18
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403×
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402
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73
6+8+10+…+20+22+24
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470+(430+63)=(470+____)+____
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359-17-83=359〇(17+____)
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420×
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30×
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303×
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206
137×
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879-57-43=879〇(57+____)
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