2、 1.24+0.78+8.76=( 1.24+8.76)+0.78= 10+0.78= 10.78
3、 1/2-(4/5- 1/2)= 1/2+ 1/2-4/5= 1-4/5= 1/5
4、4800÷25÷4 = 4800÷(25 x4)= 4800÷ 100 = 4800÷ 100 = 48
5、2/5-(3/8-3/5)=2/5+3/5-3/8= 1-3/8=5/8
6、3/4-(3/7- 1/4)=3/4+ 1/4-3/7= 1-3/7=4/7
7、3.2x 0. 125 x 2.5 = 0. 125 x8x(0.4x 2.5)= 1x 1 = 1
8、0.4× 125×25×0.8=(0.4×25)×( 125×0.8)= 10× 100= 1000
9、 1.25×(8+ 10)= 1.25×8+ 1.25× 10= 10+ 12.5=22.5
10、9 123-( 123+8.8)=9 123- 123-8.8=9000-8.8=899 1.2
1 1、 1.24×8.3+8.3× 1.76=8.3×( 1.24+ 1.76)=8.3×3=24.9
12、9999× 100 1=9999×( 1000+ 1)=9999× 1000+9999× 1= 10008999
13、 14.8×6.3-6.3×6.5+8.3×3.7=( 14.8- ? 6.5)×6.3+8.3×3.7=8.3×6.3+8.3×3.7=8.3×(6.3+3.7)=8.3× 10=83
14、 1.24+0.78+8.76=( 1.24+8.76)+0.78= 10+0.78= 10.78
15、933- 157-43=933-( 157+43)=933-200=733
16、482 1-998=482 1- 1000+2=3823
17、32× 125×25=4×8× 125×25=(4×25)×(8× 125)= 100× 1000= 100000
18、 1.8+ 18÷ 1.5-0.5×0.3= 1.8+ 12-0. 15= 13.8-0. 15= 13.65
19、6.5×8+3.5×8-47=52+28-47=80-47
20、3.7x 2.56-2.3 = 9.472-2.3 = 7. 172
2 1、 1.24+0.78+8.76=( 1.24+8.76)+0.78= 10+0.78= 10.78
22、 1/2-(4/5- 1/2)= 1/2+ 1/2-4/5= 1-4/5= 1/5
23、4800÷25÷4 = 4800÷(25 x4)= 4800÷ 100 = 4800÷ 100 = 48
24、2/5-(3/8-3/5)=2/5+3/5-3/8= 1-3/8=5/8
25、3/4-(3/7- 1/4)=3/4+ 1/4-3/7= 1-3/7=4/7
26、3.2x 0. 125 x 2.5 = 0. 125 x8x(0.4x 2.5)= 1x 1 = 1
27、0.4× 125×25×0.8=(0.4×25)×( 125×0.8)= 10× 100= 1000
28、 1.25×(8+ 10)= 1.25×8+ 1.25× 10= 10+ 12.5=22.5
29、9 123-( 123+8.8)=9 123- 123-8.8=9000-8.8=899 1.2
30、 1.24×8.3+8.3× 1.76=8.3×( 1.24+ 1.76)=8.3×3=24.9
3 1、9999× 100 1=9999×( 1000+ 1)=9999× 1000+9999× 1= 10008999
32、 14.8×6.3-6.3×6.5+8.3×3.7=( 14.8-6.5)×6.3+8.3×3.7=8.3×6.3+8.3×3.7=8.3×(6.3+3.7)=8.3× 10=83
33、 1.24+0.78+8.76=( 1.24+8.76)+0.78= 10+0.78= 10.78
34、933- 157-43=933-( 157+43)=933-200=733
35、482 1-998=482 1- 1000+2=3823
36、32× 125×25=4×8× 125×25=(4×25)×(8× 125)= 100× 1000= 100000
37、 1.8+ 18÷ 1.5-0.5×0.3= 1.8+ 12-0. 15= 13.8-0. 15= 13.65
38、6.5×8+3.5×8-47=52+28-47=80-47
39、3.7x 2.56-2.3 = 9.472-2.3 = 7. 172
40、 1.65×99+ 1.65 = 1.65*(99+ 1)= 1.65* 100= 165
exclusive of
Off-line calculation is a recursive equation calculation, which is an operation that writes out the calculation process completely, that is, off-line calculation. When calculating mixed operations, it is usually to work out an expression step by step (step by step, you can't write an equal sign on the original formula), and the process of each step should be written out. Generally speaking, the equal sign should go forward and not be aligned with the first line. That is, to leave the original calculation. The main thing to master is to remember to calculate multiplication and division before adding and subtracting. In the continuous calculation of multiplication and division, it should be calculated from left to right. When you encounter parentheses, you must first calculate the inside of parentheses. In the process of disassembly, the operation sequence line should be drawn according to the operation sequence.
Fourth grade 540 out-of-step calculations, with answers. Open Baidu
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There should be an answer of 1 in the calculation of the first volume of grade four.
6.5*8+3.5*8-47
=(6.5+3.5)*8-47
=80-47
=33
2.
14*2.25+ 14*3.75
=(2.25+3.75)* 14
=6* 14
=84
3.
3.5*0.8+5.5*0.8+0.8
=(3.5+5.5+ 1)*0.8
= 10*0.8
=8
4.
7.28- 1.5*2.4+2.72
=(7.28+2.72)- 1.5*2.4
= 10-3.6
=6.4
5.
0. 125*45.6*0.8
=0. 125*0.8*45.6
=4.56
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For the fourth grade, there is an answer. 100 offline calculation.
408- 12×24 (46+28)×60 42×50- 17 15÷5
32+ 105÷5 ( 108+47)×52 420×(327-238)
(4 12 1+2389)÷7 67 1× 15-974 469× 12+ 1492
405×(32 13-3 189) 5000-56×23 125×(97-8 1)
6942+480÷3 304×32- 154 20+80÷4-20=
100÷(32-30)×0= 25×4- 12×5=
70×〔(42-42)÷ 18〕= 75×65+75×35=
Calculate the following questions in a simple way.
1、89+ 124+ 1 1+26+48 2、875- 147-23
3.25× 125×40×8 4、 147×8+8×53
5、 125×64 6、0.9+ 1.08+0.92+0. 1
Calculate in a simple way
①89+ 124+ 1 1+26+48 ②875- 147-23
③ 147×8+8×53 ④ 125×64
Calculate the following questions.
1.280+840÷24×5 2.85×(95- 1440÷24)
3.58870÷( 105+20×2) 4.80400-(4300+870÷ 15)
5. 1437×27+27×563 6.8 1432÷( 13×52+78)
7. 125×(33- 1) 8.37.4-(8.6+7.24-6.6)
Do the math. ( 1∶ 1)
( 1) 156× 107-7729 (2)37.85-(7.85+6.4)
(3)287×5+96990÷3 18 (4) 1554÷[(72-58)×3]
exclusive of
2800÷ 100+789 (947-599)+76×64
1.36×(9 13-276÷23) 2.(93+25×2 1)×9
3.507÷ 13×63+498 4.723-(52 1+504)÷25
5.384÷ 12+23×37 1 6.(39-2 1)×(396÷6)
( 1) 156×[( 17.7-7.2)÷3] (2)[37.85-(7.85+6.4)] ×30
(3)28×(5+969.9÷3 18) (4)8 1÷[(72-54)×9]
57× 12-560÷35 848-640÷ 16× 12
960÷( 1500-32×45) [ 192-(54+38)]×67
138×25×4 ( 13× 125)×(3×8) ( 12+24+80)×50 704×25 25×32× 125 32×(25+ 125)
178× 10 1- 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 8 100÷4÷75 75×27+ 19×2 5 3 1×870+ 13×3 10
4×(25×65+25×28) 138×25×4 ( 13× 125)×(3×8) ( 12+24+80)×50
25×32× 125 32×(25+ 125) 102×76 58×98
178× 10 1- 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 8 100÷4÷75
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Too simple
Use a simple method to calculate the disjunction and answer calculation of the first volume of grade four. Examples are as follows
1、368+2649+ 135 1 =368+(2649+ 135 1)=368+4000=4368
2、 89+ 10 1+ 1 1 1=(89+ 1 1 1)+ 10 1=200+ 10 1=30 1
3、24+ 127+476+573=(24+476)+( 127+573)=500+700= 1200
4、400-273- 127=400-(273+ 127)=0
5、327+(96- 127)=327- 127+96=296
As you can see, the addition and subtraction commutative law and associative law are used.
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There are 260 answers in the first volume of Grade Four: 25-15-80 =10-80 =-70.
26 -6 -64 = 20 -64 = -44
27 + 3 -48 = 30 -48 = - 18
28 + 12 -32 = 40 -32 = 8
29 + 2 1 - 16 = 50 - 16 = 34
30 + 30 + 0 = 60 + 0 = 60
3 1 + 39 + 16 = 70 + 16 = 86
32 + 48 + 32 = 80 + 32 = 1 12
33 + 57 + 48 = 90 + 48 = 138
34 + 66 + 64 = 100 + 64 = 164
35 + 75 + 80 = 1 10 + 80 = 190
36 + 84 + 96 = 120 + 96 = 2 16
37 + 93 + 1 12 = 130 + 1 12 = 242
38 + 102 + 128 = 140 + 128 = 268
39 + 1 1 1 + 144 = 150 + 144 = 294
40 -30 - 140 = 10 - 140 = - 130
4 1 -2 1 - 124 = 20 - 124 = - 104
42 - 12 - 108 = 30 - 108 = -78
43 -3 -92 = 40 -92 = -52
44 + 6 -76 = 50 -76 = -26
45 + 15 -60 = 60 -60 = 0
46 + 24 -44 = 70 -44 = 26
47 + 33 -28 = 80 -28 = 52
48 + 42 - 12 = 90 - 12 = 78
49 + 5 1 + 4 = 100 + 4 = 104
50 + 60 + 20 = 1 10 + 20 = 130
5 1 + 69 + 36 = 120 + 36 = 156
52 + 78 + 52 = 130 + 52 = 182
53 + 87 + 68 = 140 + 68 = 208
54 + 96 + 84 = 150 + 84 = 234
55 -45 -200 = 10 -200 = - 190
56 -36 - 184 = 20 - 184 = - 164
57 -27 - 168 = 30 - 168 = - 138
58 - 18 - 152 = 40 - 152 = - 1 12
59 -9 - 136 = 50 - 136 = -86
60 + 0 - 120 = 60 - 120 = -60
6 1 + 9 - 104 = 70 - 104 = -34
62 + 18 -88 = 80 -88 = -8
63 + 27 -72 = 90 -72 = 18
64 + 36 -56 = 100 -56 = 44
65 + 45 -40 = 1 10 -40 = 70
66 + 54 -24 = 120 -24 = 96
67 + 63 -8 = 130 -8 = 122
68 + 72 + 8 = 140 + 8 = 148
69 + 8 1 + 24 = 150 + 24 = 174
70 -60 -260 = 10 -260 = -250
7 1 -5 1 -244 = 20 -244 = -224
72 -42 -228 = 30 -228 = - 198
73 -33 -2 12 = 40 -2 12 = - 172
74 -24 - 196 = 50 - 196 = - 146
1 1 3^3-5
12 4^2-34%
13 3.25-3 15%
14 7^3+445%
15 12+5268.32-2569
16 123+456-52*8
17 45%+6325
18 1/2+ 1/3+ 1/4
19 789+456-78 360÷[( 12+6)×5]
288÷[(26- 14)×8]
500×6-(50×2-80)
( 105× 12-635)÷25
864÷[(27-23)× 12]
(45+38- 16)×24
500-(240+38×6)
[64-(87-42)] × 15
(845- 15×3)÷ 16 12×[(49-28)÷7]
450÷[(84-48] )÷ 12
(58+37)÷(64-9×5)
95÷(64-45)
178- 145÷5×6+42
8 12-700÷(9+3 1× 1 1)
85+ 14×( 14+208÷26)
(284+ 16)×(5 12-8208÷ 18)
120-36×4÷ 18+35
(58+37)÷(64-9×5)
(6.8-6.8×0.55)÷8.5
0. 12× 4.8÷0. 12×4.8
(3.2× 1.5+2.5)÷ 1.6
6- 1.6÷4= 5.38+7.85-5.37=
7.2÷0.8- 1.2×5= 6- 1. 19×3-0.43=
6.5×(4.8- 1.2×4)=
5.8×(3.87-0. 13)+4.2×3.74
32.52-(6+9.728÷3.2)×2.5
[(7. 1-5.6)×0.9- 1. 15] ÷2.5
5.4÷[2.6×(3.7-2.9)+0.62]
12×6÷( 12-7.2)-6
12×6÷7.2-6
0.68× 1.9+0.32× 1.9
(58+370)÷(64-45)
420+580-64×2 1÷28
( 136+64)×(65-345÷23)
48. 10. 15- 10.75×0.4-5.7
388+(5000- 1000)
158+262+ 138
375+2 19+38 1+225
500 1-247- 102 1-232
( 18 1+2564)+27 19
378+44+ 1 14+242+222
276+228+353+2 19
(375+ 1034)+(966+ 125)
(2 130+783+270)+ 10 17
99+999+9999+99999
7755-(2 187+755)
22 14+638+286
3065-738- 1065
899+344
2357- 183-3 17-357
2365- 1086-2 14
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× 10 1- 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
8 100÷4÷75
16800÷ 120
30 100÷2 100
32000÷400
49700÷700
1248÷24
3 150÷ 15
4800÷25
2356-( 1356-72 1)
1235-( 1780- 1665)
75×27+ 19×2 5
3 1×870+ 13×3 10
4×(25×65+25×28)
( 18 1+2564)+27 19
378+44+ 1 14+242+222
276+228+353+2 19
(375+ 1034)+(966+ 125)
(2 130+783+270)+ 10 17
99+999+9999+99755-(2 187+755)
22 14+638+286 3065-738- 1065
899+344
2357- 183-3 17-357 2365- 1086-2 14
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× 10 1- 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
8 100÷4÷75
16800÷ 120
30 100÷2 100
32000÷400
49700÷700
1248÷24
3 150÷ 15
4800÷25
2 1500÷ 125
2356-( 1356-72 1)
20 45%+54%-36
The formula calculation of the first volume of grade four (the answer is also required) is a number divided by 30, and the quotient is 15 plus 23. What's this number?
2 10 times a number is 6300. What's this number?
What is the quotient of the sum of 66 and 12 1 divided by 1 1?
What are the differences between 456 and 76?
What is the quotient of 850 divided by the difference between 60 and 26?
How much is the product of 96 times 2 more than the quotient of 96 divided by 2?
What is the sum of 155 and 77 58?
205 minus the product of 15 and 7, what's the difference?
How many 38s are there in 459? How much is left?
How much is 9 times of 29 more than 2 times of 19?