四年级数学上册计算题?=30-[(4-0.2)+(1-0.25)]=30-[(4+1)-(0.2+0.25)]=30-(5-0.45)=30-5+0.45 =25.45 2、0.9+9.9+99.9+999.9+9999.9 此题先找规律,5个数都差0.1可凑整,先利用凑整法变换一下,再利用加法结合律(a+b)+c=a+(b+c),来进行简便计算。那么,四年级数学上册计算题?一起来了解一下吧。
1、420×78=
685×63=
234×97=
437÷23=
304÷38=
2、707×51
202×80=
792÷44=
594÷11=
125×80=
3、204×86=
322÷14=
930×97=
506×25=
266÷19=
4、817×39=
405×74=
177×54=
1960÷28=
330÷22=
5、345÷15=
803×14=
125×25=
336÷42=
843×69=
6、612×19=
538×82=
288÷16=
2471÷13=
806×25=

四年级上册数学计算题100道带答案如下:
25 -15 -80 = 10 -80 = -7026 -6 -64 = 20 -64 = -44
27 + 3 -48 = 30 -48 = -1828 + 12 -32 = 40 -32 = 8
29 + 21 -16 = 50 -16 = 3430 + 30 + 0 = 60 + 0 = 60
31 + 39 + 16 = 70 + 16 = 8632 + 48 + 32 = 80 + 32 = 112
33 + 57 + 48 = 90 + 48 = 138 34 + 66 + 64 = 100 + 64 = 164
35 + 75 + 80 = 110 + 80 = 190 36 + 84 + 96 = 120 + 96 = 216
37 + 93 + 112 = 130 + 112 = 242 38 + 102 + 128 = 140 + 128 = 268
39 + 111 + 144 = 150 + 144 = 29440 -30 -140 = 10 -140 = -130
41 -21 -124 = 20 -124 = -10442 -12 -108 = 30 -108 = -78
43 -3 -92 = 40 -92 = -5244 + 6 -76 = 50 -76 = -26
45 + 15 -60 = 60 -60 = 046 + 24 -44 = 70 -44 = 26
47 + 33 -28 = 80 -28 = 52 48 + 42 -12 = 90 -12 = 78
49 + 51 + 4 = 100 + 4 = 10450 + 60 + 20 = 110 + 20 = 130
51 + 69 + 36 = 120 + 36 = 156 52 + 78 + 52 = 130 + 52 = 182
53 + 87 + 68 = 140 + 68 = 20854 + 96 + 84 = 150 + 84 = 234
55 -45 -200 = 10 -200 = -19056 -36 -184 = 20 -184 = -164
57 -27 -168 = 30 -168 = -138 58 -18 -152 = 40 -152 = -112
59 -9 -136 = 50 -136 = -86 60 + 0 -120 = 60 -120 = -60
61 + 9 -104 = 70 -104 = -3462 + 18 -88 = 80 -88 = -8
63 + 27 -72 = 90 -72 = 18 64 + 36 -56 = 100 -56 = 44
65 + 45 -40 = 110 -40 = 7066 + 54 -24 = 120 -24 = 96
67 + 63 -8 = 130 -8 = 12268 + 72 + 8 = 140 + 8 = 148
69 + 81 + 24 = 150 + 24 = 17470 -60 -260 = 10 -260 = -250
71 -51 -244 = 20 -244 = -22472 -42 -228 = 30 -228 = -198
73 -33 -212 = 40 -212 = -17274 -24 -196 = 50 -196 = -146
1、30-(3.8+0.75)
此题主要利用加法结合律和分配律,先把3.8变换成(4-0.2),0.75变换成(1-0.25),再利用加法交换律,先算整数,再算小数,最后利用加法结合律,去掉括号运算。
30-(3.8+0.75)
=30-[(4-0.2)+(1-0.25)]
=30-[(4+1)-(0.2+0.25)]
=30-(5-0.45)
=30-5+0.45
=25.45
2、0.9+9.9+99.9+999.9+9999.9
此题先找规律,5个数都差0.1可凑整,先利用凑整法变换一下,再利用加法结合律(a+b)+c=a+(b+c),来进行简便计算。
0.9+9.9+99.9+999.9+9999.9
=(1-0.1)+(10-0.1)+(100-0.1)+(1000-0.1)+(10000-0.1)
=1+10+100+1000+10000-0.1×5
=11111-0.5
=11110.5
3、21÷3.5+21÷1.5
此题先利用拆分法将3.5转换成7÷0.5,将1.5转换成3÷0.5,再用凑整法先计算整数除法,再计算小数除法,使得运算简便。
14.5+6.96 75+25-75+25 158+262+138
375+219+381+225
5001-247-1021-232
(181+2564)+2719
378+44+114+242+222
276+228+353+219
(375+1034)+(966+125)
(2130+783+270)+1017
99+999+9999+99999
7755-(2187+755)
2214+638+286
3065-738-1065
899+344
2357-183-317-357
2365-1086-214
497-299
2370+1995
3999+498
1883-398
12×25
75×24
138×25×4
(13×125)×(3×8)
(12+24+80)×50
704×25
25×32×125
32×(25+125)
88×125
102×76
58×98
178×101-178
84×36+64×84
75×99+2×75
83×102-83×2
98×199
123×18-123×3+85×123
50×(34×4)×3
25×(24+16)
178×99+178
79×42+79+79×57
7300÷25÷4
8100÷4÷75
16800÷120
30100÷2100
32000÷400
49700÷700
1248÷24
3150÷15
4800÷25
21500÷125
附加题:
2356-(1356-721)
1235-(1780-1665)
75×27+19×2 5
31×870+13×310
4×(25×65+25×28)
825÷32=
336÷63=
932×44=
652×39=
886÷23=
288÷32=
66×123=
912×67=
644÷28=
432÷26=
45×193=
365×55=
728÷56=
540÷12=
693×22=
563×18=
7200÷900=
960÷80=
523×79=
156×92=
65100÷210=
9100÷700=

以上就是四年级数学上册计算题的全部内容,脱式计算,即递等式计算,是数学学习中基础且重要的部分。对于四年级学生而言,掌握脱式计算的规则和方法至关重要。以下是对四年级数学上册脱式计算题专题训练的详细解析:一、脱式计算的基本原则 运算顺序:先乘除后加减:在没有括号的情况下,先进行乘法和除法运算,再进行加法和减法运算。内容来源于互联网,信息真伪需自行辨别。如有侵权请联系删除。