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重点单元计算题真题汇编:分数乘除法(专项训练)数学六年级上册人教版
1.(2022六上·惠来期末)合理、灵活计算。
(1)( + - )×12
(2) ×3.8+ ×3.2
(3)32× ÷ +
(4)35÷( ÷ )
2.(2022六上·黄埔期末)计算下面各题,能用简便算法的就用简便算法。
(1) - ÷
(2)( + )×4.8
(3) ÷ ×
(4) × ÷( - )
3.(2022六上·岷县期末)用你喜欢的方法计算。
(1) - +
(2) ×22+ ×22
(3) ×( - )
(4)4÷ ÷
4.(2021六上·市中期末)计算
①64×2﹣32+256﹣128
② ÷[( ﹣ )÷0.625]
③(34﹣ )÷17×
④66.5×1002
⑤ + + +
⑥35.21×73﹣3521×0.29+ ×
5.(2022六上·汉川期末)选择合适的方法计算下列各题。
(1)
(2)
(3)
(4)
6.(2022六上·罗湖期末)脱式运算,能简算的要简算。
(1)15×( + )
(2)0.25÷ +0.75×
(3)[ ×( - )]÷
7.(2022六上·舒兰期末)能简算的要简算。
(1) × + ÷9
(2) ÷(5- - )
(3) ÷14×
(4) × ×
8.(2022六上·槐荫期末)计算。(能用简便方法的用简便方法算)
①
②
③
④
⑤
⑥
9.(2021六上·海口期末)用你喜欢的方法计算。
(1) × ÷
(2)24×( + - )
(3)(15-14× )×
(4)4×[( + )÷6]
10.(2022六上·涧西期末)能简算的要简算。
(1)
(2)
(3)
(4)
11.(2022六上·襄汾期末)能简算的要简算。
(1)
(2)
(3)
12.(2021六上·玄武期末)计算下面各题,怎样简便就怎样算。
①
②(1+ )×
③
④
⑤63×( )÷
⑥0.5÷[3×( )]
13.(2022六上·盐城期末)下面各题,怎样算简便就怎样算。
(1) ÷[( - )÷ ]
(2)( + )×12×11
(3) ×2021
(4)14× +51×
14.(2022六上·兖州期末)计算下面各题。(能简算的要简算)
①
②
③
④
⑤
⑥
15.(2022六上·东兴期末)计算下面各题。
① × ÷
② ×( +14)
③ - -
④ × + ÷9
⑤1- ÷
⑥ ×[ ÷( - )]
16.(2022六上·惠阳期末)用自己喜欢的方法计算下面各题。
(1) ×0.375+ ÷
(2)24×( - +1)
(3)6÷ - ÷6
17.(2022六上·启东期末)下面各题怎样简便就怎样算。
(1)
(2)
(3)
18.(2022六上·织金期末)计算下列各题,能简算的要简算。
(1) ×33
(2) - -
(3)12÷ ÷
(4) + × ÷2
答案解析部分
1.【答案】(1)( + - )×12
= ×12+ ×12- ×12
=6+8-10
=4
(2) ×3.8+ ×3.2
= ×(3.8+3.2)
= ×7
=5
(3)32× ÷ +
=32× × +
=24+
=24
(4)35÷( ÷ )
=35÷
=
2.【答案】(1)-÷
=-
=
(2)(+)×4.8
=×4.8+×4.8
=3+4
=7
(3)÷×
=×
=
(4)×÷(-)
=÷
=
3.【答案】(1)-+
=-+
=+
=
(2)×22+×22
=(+)×22
=1×22
=22
(3)×(-)
=×(-)
=×
=
(4)4÷÷
=4××
=6×
=
4.【答案】①64×2﹣32+256﹣128
=128﹣32+256﹣128
=256﹣32
=224
② ÷[( ﹣ )÷0.625]
= ÷[ ÷ ]
= ÷
=4
③(34﹣ )÷17×
=(34﹣ )× ×
=34× × - × ×
= -
=
④66.5×1002
=66.5×(1000+2)
=66.5×1000+66.5×2
=66500+133
=66633
⑤+++
=+++
=×(-+-+-+1-)
=×(1-)
=×
=
⑥35.21×73-3521×0.29+×
=35.21×73-35.21×29+35.21×56
=35.21×(73+29+56)
=35.21×158
=5563.18
5.【答案】(1)×-÷
=(-)×
=2×
=
(2)1-÷-
=1--
=0
(3)(+×)÷
=(+)÷
=÷
=
(4)÷[(+)×2]
=÷[×2]
=÷
=
6.【答案】(1)15×( + )
=15× +15×
=10+12
=22
(2)0.25÷ +0.75×
=0.25× +0.75×
=(0.25+0.75)×
=
(3)[ ×( - )]÷
=[ × ]×
= ×
=
7.【答案】(1)×+÷9
=×(+)
=×1
=
(2)÷(5--)
=÷[5-(+)]
=÷[5-1]
=÷4
=
(3)÷14×
=××
=×
=
(4)××
=×
=
8.【答案】①×÷
=××
=
②+×
=+
=+
=
③×+×
=(+)×
=1×
=
④×0.125÷
=××
=
⑤34×
=(33+1)×
=33×+1×
=8+
=8
⑥(+-)×36
=×36+×36-×36
=27+18-21
=24
9.【答案】(1) × ÷
= × ×
=
(2)24×( + - )
= 24× +24× - 24×
=16+4-18
=20-18
=2
(3)(15-14× )×
=(15-8 )×
=7×
=
(4)4×[( + )÷6]
=4×(×)
=4×
=1
10.【答案】(1)+++
=(+)+(+)
=1+1
=2
(2)÷[-(+)]
=÷[-]
=÷
=
(3)×+÷
=(+)×
=1×
=
(4)2021×
=(2022+1)×
=2022×+
=
11.【答案】(1)
=[ × ]÷
= ÷
=
(2)
=12× ×5+12× ×5+12× ×5
=5+4+15
=24
(3)
=(99-1)× -
=99× -1× -
=98-( + )
=98-1
=97
12.【答案】①26×÷
=÷
=
②(1+÷)×
=(1+)×
=×
=
③×0.375÷
=×÷
=÷
=
④×+×
=×(+)
=×1
=
⑤63×(-)÷
=63××10-63××10
=900-700
=200
⑥0.5÷[3×(-)]
=0.5÷[3×]
=0.5÷
=1
13.【答案】(1)解: ÷[( - )÷ ]
= ÷( ÷ )
= ÷
=4
(2)解:( + )×12×11
= ×12×11+ ×12×11
=55+36
=91
(3)解: ×2021
= ×(2022+1)
= ×2022+
=
(4)解:14× +51×
=14× +29×
=(14+29)×
=43×
=51
14.【答案】①6÷-0.6
=2.25-0.6
=1.65
②÷÷
=÷÷
=1÷
=
③(-)×
=×
=
④17×+17÷
=17×(+)
=17×1
=17
⑤÷(3--)
=÷[3-(+)]
=÷[3-1]
=÷2
=
⑥9×(+6÷)
=9×(+)
=9×5
=45
15.【答案】①×÷
=×
=
②×(+14)
=×+×14
=2+8
=10
③--
= -(+)
=-1
=
④×+÷9
=×+×
=(+)×
=1×
=
⑤1-÷
=1-
=
⑥×[÷(-)]
=×(÷)
=×
=4
16.【答案】(1)×0.375+÷
=×+×
=×(+)
=×2
=
(2)24×(-+1)
=24×-24×+24×1
=16-4+24
=36
(3)6÷-÷6
=6×-×
=7-
=
17.【答案】(1)4÷-÷4
=9-
=
(2)15.8-+14.2-
=(15.8+14.2)-(+)
=30-1
=29
(3)+×19
=×(1+19)
=×20
=16
18.【答案】(1)×33
=×(34-1)
=×34-×1
=33-
=
(2)--
=-(+)
=-1
=
(3)12÷÷
=15×
=40
(4)+×÷2
=+÷2
=+
=
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