中小学教育资源及组卷应用平台
专题五:简便运算 寒假专题练
2024--2025学年小学数学人教版六年级上册
1.
75×24+836÷4
3.14×101-3.14
3.2×12.5
60.15-14.75-5 25×3.2×12.5
1.25×8.8 1080-63.58-36.42
×58+42÷8
×25%+×
67÷[3÷(13%-10%)]
+0.65÷1.3-30%
0.965×(0.5+1.2÷0.25)
3.68×[1÷(10%-9%)] (20.2×0.4+7.88)÷4.2
÷[(-)×2] 4.82-5.2÷80%×60%
0.81-0.18÷1×0.7
参考答案:
1.;;;2009
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75×24+836÷4
=1800+209
=2009
2.;;;
;;;
; ;;
2; ;2.3
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=1-
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=2
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=3-
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=1.2+1.5-0.4
=2.7-0.4
=2.3
3.;;
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=7×
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4.;19;
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=15+4
=19
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5.;18;
34;314
(1)
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(2)
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=18
(3)
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=34
(4)3.14×101-3.14
=3.14×(101-1)
=3.14×100
=314
6.15;40;
40.15;1000
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=;
3.2×12.5
=(8×12.5)×0.4
=100×0.4
=40;
60.15-14.75-5
=60.15-14.75-5.25
=60.15-(14.75+5.25)
=60.15-20
=40.15;
25×3.2×12.5
=(25×0.4)×(8×12.5)
=10×100
=1000
7.;;
11;980
(1)
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(2)
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(3)1.25×8.8
=1.25×8×1.1
=10×1.1
=11
(4)1080-63.58-36.42
=1080-(63.58+36.42)
=1080-100
=980
8.12.5;3;
;23
(1)×58+42÷8
=×58+42×
=(58+42)×
=100×
=12.5
(2)
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=3
(3)×25%+×
=×+×
=×(+)
=×1
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(4)
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=23
9.4.48;0.67;
2;3.7
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=;
67÷[3÷(13%-10%)]
=67÷[3÷3%]
=67÷100
=0.67;
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=;
+0.65÷1.3-30%
=3.5+0.5-0.3
=3.7
10.5.1145;;
368;3.8
0.965×(0.5+1.2÷0.25)
=0.965×(0.5+4.8)
=0.965×5.3
=5.1145;
=
=
=;
3.68×[1÷(10%-9%)]
=3.68×[1÷1%]
=3.68×100
=368;
(20.2×0.4+7.88)÷4.2
=(8.08+7.88)÷4.2
=15.96÷4.2
=3.8
11.3;1;0.92
0.74;;
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=;
÷[(-)×2]
=÷[×2]
=÷
=1;
4.82-5.2÷80%×60%
=4.82-3.9
=0.92;
0.81-0.18÷1×0.7
=0.81-0.18÷1.8×0.7
=0.81-0.07
=0.74;
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