第1个回答 2009-06-20
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
2356-(1356-721)
1235-(1780-1665)
75×27+19×2 5
31×870+13×310
4×(25×65+25×28)
(1)(78+61)+39 (2)700-82-18
(3)348+163+242+410+537
(4)125×47-47×25 (5)201×316
(6)374-205+226-95 (7)3000-999
(8)997×7+21 (9)87×470+870×53
(10)(55+55+55+55×5)×125
(11)125×(8+40)×25 (12)99+49×99
(13)264×97+4×264
(14)454+999×999+545
(15)9999×36+6666×3×32
(16)124×38+65×124+76×110-76×7
(17)62×4+44×5+5×18
(18)3400-62×34-38×20-38×14
(19)1992×19911991-1991×19901990
(20(2+4+6+……+100)-(1+3+5+……+99)
够了没?本回答被提问者采纳
第2个回答 2009-06-20
(a+b)+ c = a +(b+c)
1. 2.73 + 0.89 + 1.27
2. 4.37 + 0.28 + 1.63 + 5.72
a-b-c = a -(b+c)
1. 10 - 0.432 - 2.568
2. 9.3 - 5.26 - 2.74
3. 13.4-(3.4+5.2)
4. 14.9-(5.2+4.9)
5. 18.32 - 5.47 - 4.32
6. 17.29 - 5.28 - 6.29
(a × b)×c = a ×(b × c)
1. 25 × 6.8 × 0.04
2. 0.25 × 32 × 0.125
3. 6.4 × 1.25 × 12.5
c ×(a+b)= ca + cb
1. 0.45 × 201
2. 0.58 × 10.1
3. 50.2 × 99
4. 4.7 × 9.9
5. 3.28 × 5.7 + 6.72 × 5.7
6. 2.1 × 99 + 2.1
7. 1.7 × 9.9 + 0.17
8. 23 × 0.1 + 2.3 × 9.9
1. 0.18 +4.26 -0.18 +4.26 ☆
2. 0.58 ×1.3 ÷ 0.58 ×1.3 ☆
3. 7.3 ÷4 + 2.7 × 0.25 ☆
4. 3.75 × 0.5 - 2.75 ÷ 2 ☆
5. 5.26 × 0.125 + 2.74 ÷ 8 ☆
a ÷ b ÷ c = a ÷ (b × c)
6. 6.3 ÷ 1.8
7. 4.2 ÷ 3.5
8. 9.5 ÷(1.9 × 8)
9. 12.8 ÷ (0.4 × 1.6)
10. 930 ÷ 0.6 ÷5
11. 63.4 ÷ 2.5 ÷ 0.4
12. (7.7 + 1.54)÷ 0.7 ☆
13. (11.7 + 9.9)÷ 0.9 ☆
简便计算(加减法)
6.9+4.8+3.1
15.89+(6.75-5.89)
7.85+2.34-0.85+4.66
35.6-1.8-15.6-7.2
13.75-(3.75+6.48)
47.8-7.45+2.55
66.86-8.66-1.34
乘除法:0.25×16.2×4
0. 25×32 ×0.125
2 .5 ×(4 +0.4)
(1.25-0.125)×8
4.8×100.1
4.2×99
56.5×9.9+56.5
5.4×11-5.4
3.83×4.56+3.83×5.44
7.09×10.8-0.8×7.09
3.65×4.7-36.5×0.37
13.7×0.25-3.7÷4
10.7×16.1-1.1×10.7 +10.7 ×5
4.9÷1.4
3.9÷(1.3×5)
63.4÷2.5÷0.4
(7.7+1.4)÷0.7
18 ÷ (2+9)
第3个回答 2012-06-18
6.28+5.06+4.04 51.27-8.66-1.34 2.43-(0.28+1.43)
52.89-(13.54+6.89) 53.14+(16.57+6.86) 22.6-(3.9+12.6)
32.8+3.02+17.2 100-36.4-43.6 6.02+4.3+3.98
7.45+8.29+2.55 13.78-(0.87+0.69) 10-3.62-1.38
75.8-32.5-6.75 1.83+3.79+0.17 3.2-4.3+1.8
8.2-1.86-14.4 24.8+14.6+15.4 5.85-1.75-0.25
5.85+1.89+2.15 3.8+14.6+6.2 19-9.05-0.95
6.54-2.36-3.64 4.6+14.3+5.7 15-1.2-0.8
2.6+6.92+3.4 51.69-(11.69+10.15) 18.76-(5.76+2.9)
3.73+5.27+1.2 75.8-3.25-6.75 100-36.4-43.6
32.8+3.02+17.2 7.45+8.29+2.55 13.78-(0.78+0.5)
8.38+9.43+6.62 5.86-1.77+2.54 17.34-(9.8+6.34)
第4个回答 2020-02-05
这是一整套视频,没有看过其他内容的同学,可以进老师的主页找一找看一看。提前预习,开学做学霸。学过的同学复习一下还是很好的,没学过的同学,可以好好地预习。