五年级上册数学单元测试-4.小数混合运算_ 西师大版(2014秋)(含答案)

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名称 五年级上册数学单元测试-4.小数混合运算_ 西师大版(2014秋)(含答案)
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科目 数学
更新时间 2018-12-02 19:31:46

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五年级上册数学单元测试-4.小数混合运算
一、单选题
1.(5.2-5.2)÷0.8=(?? )
A.?? 10.2??????????????????????????????????????B.?5.4??????????????????????????????????????C.?1.74??????????????????????????????????????D.?0
2.?? 38.4除以6.4的商再减去2.7与0.3的积,差是(?? )
A.?? 6??????????????????????????????????????B.?5.19??????????????????????????????????????C.?0.81??????????????????????????????????????D.?51.9
3.16.85÷0.5-16.92=(?? )
A.?? 14.3???????????????????????????????????B.?16.78???????????????????????????????????C.?24.2???????????????????????????????????D.?1.68
4.1.2+1.2﹣1.2+1.2=(  )
A.?0????????????????????????????????????????????B.?2.4????????????????????????????????????????????C.?3.6
5.4.4×0.5×0.2=(?? )
A.?? 4???????????????????????????????????????B.?13.7???????????????????????????????????????C.?0.44???????????????????????????????????????D.?26
6.8个0.1和72个0.01合在一起是(  )
A.?1.2???????????????????????????????????????B.?80???????????????????????????????????????C.?0.8???????????????????????????????????????D.?1.52
7.5.4×0.1×10=(?? )
A.??? 10.2??????????????????????????????????????B.?5.4??????????????????????????????????????C.?1.74??????????????????????????????????????D.?0
8.1.1÷(0.5+3.15÷0.3)=(?? )
A.?? 0.1????????????????????????????????????????B.?1.2????????????????????????????????????????C.?0.5????????????????????????????????????????D.?7
9.能简算的要用简便方法计算.
4.42÷(0.25×6.8)=(?? )
A.?0.026??????????????????????????????????????B.?2.6??????????????????????????????????????C.?26??????????????????????????????????????D.?0.26
10.3.5×(9.04-14.4÷3.6)=(?? )
A.?? 6.2?????????????????????????????????????B.?17.64?????????????????????????????????????C.?41.5?????????????????????????????????????D.?44
二、判断题
11.判断对错.
9.8+0.2×9.8+0.2
=(9.8+0.2)×2
12.判断对错.
2.5×0.4÷2.5×0.4
=1÷1
=1
13.判断对错.
9.2×3.8+9.2×62
=9.2×(3.8+6.2)
=9.2×10
=92
14.小数四则运算的顺序跟整数是一样的,整数四则运算的定律也适用于小数。
15.在5.5-5.8÷0.2中,可以先算减法,再算除法。
三、填空题
16.? 7.25+56÷32-3.25=________
17.4.7除22.56的商再乘6.4,结果是________
18.请你帮收款机把下面的购物小票填写完整.(从上到下填写)
??
19.72×0.26÷6.5=________
20.甲数是10.9,比乙数多0.852,甲、乙两数的和是________.
21.1.1×2.1×0.5÷4.2=________
22.怎样算简便就怎样算.
0.125×8×3.2=________
23.?? 12.81÷[(50.7-42.3)×0.5]=________
24.计算
(2.6+1.65÷0.15)×0.12=________
25.看图回答

?
四、计算题
26.脱式计算(能简算的要简算)? ????①26×15.7+15.7×24
②(2.275+0.625)×0.28
③64-2.64×0.5
27.脱式计算,怎样简便就怎样算。①63.35-4.75+5.25
②3.89+2.67+0.15
③8.1+6.93+1.9+0.07
④46.5-(13.55+7.2)
⑤20-12.64-3.36
⑥39.74-(9.74+8.69)
五、解答题
28.列式计算.
①5.2减去1.4的差除以 ,结果是多少?
②一个数的25%比 的2倍多0.4,求这个数.
六、应用题
29.某品牌出租车起步(3公里及3公里以内)价是6元,超过3公里而在7公里以内每公里按1.5元计价;7公里以上部分每公里再加价50%.旅客从西安火车站乘出租车到距离约8公里的“陕西省历史博物馆”,到达时应付多少车费?


答案解析部分
一、单选题
1.【答案】D 2.【答案】B 3.【答案】B 4.【答案】B 5.【答案】C 6.【答案】D
7.【答案】B 8.【答案】A 9.【答案】B 10.【答案】B
二、判断题
11.【答案】错误 12.【答案】错误 13.【答案】错误 14.【答案】正确 15.【答案】错误
三、填空题
16.【答案】5.75 17.【答案】30.72 18.【答案】4.20,10.80,10.80, 25.80,4.20
19.【答案】2.88 20.【答案】20.948 21.【答案】0.275 22.【答案】3.2
23.【答案】3.05 24.【答案】1.632 25.【答案】8.1
四、计算题
26.【答案】解:①26×15.7+15.7×24
=(26+24)×15.7
=50×15.7
=785
②(2.275+0.625)×0.28
=2.9×0.28
=0.812
③64-2.64×0.5
=64-1.32
=62.68
27.【答案】解:①63.35-4.75+5.25
=58.6+5.25
=63.85
②3.89+2.67+0.15
=6.56+0.15
=6.71
③8.1+6.93+1.9+0.07
=(8.1+1.9)+(6.93+0.07)
=10+7
=17
④46.5-(13.55+7.2)
=46.5-20.75
=25.75
⑤20-12.64-3.36
=20-(12.64+3.36)
=20-16
=4
⑥39.74-(9.74+8.69)
=39.74-9.74-8.69
=30-8.69
=21.31
五、解答题
28.【答案】解:①(5.2﹣1.4)÷
=3.8÷
=9.5
答:结果是9.5.
②解:设这个数是x,由题意得:
25%x= ×2+0.4
25%x=1.6
? ? ?? x=6.4
答:这个数是6.4
六、应用题
29.【答案】解:
? 6+(7﹣3)×1.5+(8﹣7)×1.5×(1+50%)=6+6+2.25
=14.25(元)
答:到达时应付14.25元的车费.