=(2.5×4)×(8×0. 125)
= 10× 1
= 10
(2)3.5-7+6.5
=3.5+6.5-7
=3
(3) 1.2×2.5+0.8×2.5
=2.5( 1.2+0.8)
=25
(4)8.9× 1.25-0.9× 1.25
= 1.25×(8.9-0.9)
= 10
(5) 12.5×7.4×0.8
= 12.5×0.8×7.4
=74
(6)6.5×9.5+6.5×0.5
=6.5×(9.5+0.5)
=6.5× 10
=65
(7)0.35× 1.6+0.35×3.4
=0.35×( 1.6+3.4)
=0.35×5
= 1.75
(8)6.72-3.28- 1.72
=6.75-(3.28+ 1.72)
=6.75-5
= 1.75
(9)0.45+6.37+4.55
=0.45+4.55+6.37
=5+6.37
= 1 1.37
( 10)28× 12.5- 12.5×20
=(28-20)× 12.5
=8× 12.5
= 100
( 1 1)23.65-(3.07+3.65)
=23.65-3.65-3.07
=20-3.07
= 16.93
( 12)(4+0.4×0.25)×8×7× 1.25
=(4+ 1)×7×(8× 1.25)
=5×7× 10
=350
( 13) 1.65×99+ 1.65
= 1.65×(99+ 1)
= 1.65× 100
= 165
( 14)27.85-(7.85+3.4)
=27.85-7.85+3.4
=20+3.4
=23.4
( 15)7.8×9.9+0.78
=7.8×(9.9+0. 1)
=7.8× 10
=78
( 16)4.8×46+4.8×54
=(46+54)×4.8
= 100×4.8
=480
( 17)673-327- 173
=673-(327+ 173)
=673-500
= 173
( 18)4.44×2.5
= 1. 1 1×(4×2.5)
= 1. 1 1× 10
= 1 1. 1
( 19)3.5÷ 1.4
=(3.5÷0.7)÷( 1.4÷0.7)
=5÷2
=2.5
(20) 1+2+3+4+5+……+99+ 100
=( 1+ 100)× 100÷2
= 10 1× 100÷2
= 10 10÷2
=5050
Edited on 20 17-08-03
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According to the simple calculation mentioned in the article, I recommend you to go to the fifth grade.
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The multiplication sign and the plus sign are not written after question 2.5. There are no unknowns.
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The simple algorithm of mathematics in the second volume of the fifth grade with answers.
Example 1, 5.76+13.67+4.24+6.33 = (5.76+4.24)+(13.67+6.33) =10+1. 37.24+23.79-17.24 = 37.24-17.24+23.79 = 20+23.79 = 43.79 cases 3,4× 3.78× 0.25 = 4× 0.25× 3.78 = 125× 246× 0.8 =125× 0.8× 246 =100× 246 = 24,600 cases 5, (2.5+12.5 )× 40 = 2.5×. 3.68× 4.79+6.32× 4.79 = (3.68+6.32 )× 4.79 =10× 4.79 = 47.9 cases 7.26.86× 25.66-16.86× 25.66 = Kloc-0/01= 57× (100+1) = 57×100+57×1= 5757 cases1/kloc-0. = 7.8×1+7.8× 0.1= 7.8+0.78 = 8.58 cases 12, 25×32 =25×4×8 = 100×8 =800 cases. 125× 0.72 =125× 8× 0.09 =1000× 0.09 = 90 cases14,87× 2/85 = (85+2 )× 2/85. 56.5-3.7-6.3 = 56.5-(3.7+6.3) = 56.5-10 = 46.5 cases 16, 32.6 ÷ 0.4 ÷ 2.5 = 32.6 ÷ (0
35 12 likes 28,256 to browse 2020-02-26.
50 simple calculation questions and answers in grade five
Use a simple method to calculate. 1, 368+2649+ 135 12, 87+10/+133, 24+ 72×98 7、999+99+9 8、442- 103- 142 9、67×5×2 10、25×(78×4) 1 1、72× 125 12、9000÷ 125÷8 1 3、400÷25 14、 25×36 15、 103×27 16、76× 102 17、3600÷25÷4 18、99×35 19、(25+ 12)×4 20、 56×27+27×44 2 1、56×99+56 22、 125×25×8×4 23、25×32× 125 24、 125×64 ( 1)(78+6 1)+39 (2)700-82- 18 (3) 348+ 163+242+4 10+537 (4) 125×47-47×25 (5)20 1×3 16 (6)374-205+22 6-95 (7)3000-999 (8)997×7+2 1 (9) 87×470+870×53 ( 10)(55+55+55+55×5)× 125 ( 1 1) 125×(8+40)×25 ( 12)99+49×99 ( 1 3)265×97+4×265 ( / kloc-0/4)454+999×999+545 ( 15)9999×36+6666×3×32 ( 16) 124×38+65× 124+76× 1 10-76×7 ( 17) 62×4+44×5+5× 18 ( 18)3400-62×34-38×20-38× 14 ( 19) 1992× 199 1 199 1- 199 1× 1990 1990
193 likes 1 980Browse 20 18-02-09.
Simple math questions and answers grade five
( 1)2.5*32*0. 125 =(2.5*4)*(8*0. 125) = 10* 1 = 10 (2)3.5-7+6.5 =3.5+6.5-7 =3 (3) 1 .2×2.5+0.8×2.5 =2.5( 1.2+0.8) =25 (4)8.9× 1.25-0.9× 1.25 = 1.25(8.9-0.9) = 10 (5) 12.5×7.4×0.8 = 1 2.5×0.8×7.4 =74 (6)6.5×9.5+6.5×0.5 =6.5×(9.5+0.5) =6.5× 10 =65 (7)0.35× 1.6+0.35×3.4 =0.35* ( 1.6+3.4) =0.35* 5 = 1.75 (8) 6.72-3.28- 1.72 =6.75-(3.28+ 1.72) =6.75-5 = 1.75 (9)0.45+6.37+4.55 =0.45+4.55+6.37 =5+6.37 = 1 1.37 ( 1 0) 28× 12.5- 12.5×20 =(28-20)* 12.5 =8* 12.5 = 100 ( 1 1)23.65-(3.07+3.65) =23.65-3.65-3.07 =20-3.07 = 16.93 ( 12)(4+0.4×0.25)8×7× 1.25 =(4+ 1)*7* 10 =5*7* 10 =350 ( 13) / kloc-0/.65×99+ 1.65 = 1.65*(99+ 1) = 1.65* 100 = 165 ( 14)27.85-(7.85+3.4) =27.85-7.85+3.4 =20+3.4 =23.4 ( 15)48× 1.25+50× 1.25×0.2×8 7.8×9.9+0.78 =7.8* (9.9+0. 1) =7.8* 10 =78 ( 16) 4.8×46+4.8×54 =(46+54)*4.8 = 100* 4.8 =480 ( 17)673-327- 173 =673-(327+ 173) =673-500 = 173 ( 18)4.44* 2.5 = 1. 1 1*(4* 2.5) = 1. 1 1* 10 = 1 1. 1 ( 19)3.5÷ 1 .4 =(3.5÷0.7)÷( 1.4÷0.7) =5÷2 =2.5 (20) 1+2+3+4+5......+99+ 100 =( 1+99)+(2+9 8)+(3+97)+......+(49+5 1)+50 =( 100÷2- 1)* 100+50 =4900+50 =4950
2729 likes 35806 to browse 2020-02- 19.
100 simple operation with answers in grade five.
75÷〔 138÷( 100-54)〕 85×(95- 1440÷24) 80400-(4300+870÷ 15) 240×78÷( 154- 1 15) 1 437×27+27×563 〔75-( 12+ 18)〕÷ 15 2 160÷〔(83-79)× 18〕 280+840÷24×5 325÷ 13×(266 -250) 85×(95- 1440÷24) 58870÷( 105+20×2) 1437×27+27×563 8 1432÷( 13×52+78) [37.85-(7.85+6.4)] ×30 156×[( 17.7-7.2)÷3] (947-599) +76×64 36×(9 13-276÷23) [ 192-(54+38)]×67 [(7. 1-5.6)×0.9- 1. 15] ÷2.5 8 1432÷( 13×52+78) 5.4÷[2.6×(3.7-2.9)+0.62] (947-599)+76×64 60-(9.5+28.9)]÷0. 18 2.88 1÷0.43-0.24×3.5 20×[(2.44- 1.8) ÷0.4+0. 15] 28-(3.4 / kloc-0/.25×2.4) 0.8×〔 15.5-(3.2 1 5.79) 〕 (3 1.8 3.2×4)÷5 194-64.8÷ 1.8×0.9 36.72÷4.25×9.9 3.4 16÷(0.0 / kloc-0/6×35) 0.8×[( 10-6.76)÷ 1.2] ( 136+64)×(65-345÷23) (6.8-6.8×0.55) ÷8.5 0. 12× 4.8÷0. 12×4.8 (58+37)÷(64-9×5) 8 12-700÷(9+3 1× 1 1) (3.2× 1.5+2.5)÷ 1.6 85+ 14×( 14+208÷ 26) 120-36×4÷ 1 8+35 (284+ 16)×(5 12-8208÷ 18) 9.72× 1.6- 18.305÷7 4/7÷[ 1/3×(3/5-3/ 10)] (4/5+ 1/ 4)÷7/3+7/ 10 12.78-0÷( 13.4+ 156.6 ) 37.8 12-700÷(9+3 1× 1 1) ( 136+64)×(65-345÷23) 3.2×( / kloc-0/.5+2.5)÷ 1.6 85+ 14×( 14+208÷26) (58+37)÷(64-9×5) (6.8-6.8×0.55) ÷8.5 (284+ 16)×(5 12-8208÷ 18) 0. / kloc-0/2× 4.8÷0. 12×4.8 (3.2× 1.5+2.5)÷ 1.6 120-36×4÷ 18+35 10. 15 - 1 0.75×0.4-5.7 5.8×(3.87-0. 13)+4.2×3.74 347+45×2-4 160÷52 32.52-(6+9.728÷3.2)×2.5 87(58+37)÷(64-9×5) [(7. 1-5.6)×0.9- 1 .6543 8+05] ÷2.5 (3.2× 1.5+2.5)÷ 1.6 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷( 12-7.2)-6 3.2×6+( 1.5+2.5)÷ 1 .6 (3.2× 1.5+2.5)÷ 1.6 5.8×(3.87-0. 13)+4.2×3.74 33.02-( 148.4-90.85)÷2.5
16 likes 1, 238 browses 20 17-07- 14
Simple calculation of 30 questions and answers in the first volume of fifth grade mathematics
1, 24.6-3.98+5.4-6.02 Analysis: This problem is calculated by using the associative law of addition exchange. The steps are as follows: 24.6-3.98+5.4-6.02 = (24.6+5.4)-(3.98+6.02) = 30-10 = 202,27×17/26 Analysis: This problem is divided by the law of addition first. 27×17/26 = (26+1)×17/26 = 26×17/26+1×/kloc-0 =/. The steps are as follows: 528-99 = 528-(100-1) = 528-100+1= 428+1= 429 4,1. 1.2 × 2.5+0.8 × 2.5 = (1.2+0.8) × 2.5 = 2 × 2.5 = 5.5, 2.96×40 Analysis: Firstly, the problem is transformed from 2.96×40 to 29.6×4 by using the multiplication distribution law. 2.96×40 = 29.6 x4 =(30-0.4)x4 = 30×4+0.4x 4 = 120- 1.6 = 1 18.46，0.36x 1.5。 0.36 x 1.5-0.45 = 0.36 x 1.5- 1.5x 0.3 = 1.5×(0.36-0.3)= 1.5×0.06 = 0.097，46。 46× 44/45 = (45+1)× 44/45 = 45× 44/45+44/45 = 44+44/45 = 44 and 44/45 8,1.6× 7.5× 655. 1.6× 7.5× 1.25 = 2× 0.8× 7.5× 1.25 = (2× 7.5 )× (0.8× 1.25) = 15× 65438+.0.72× 10. 1 =0.72×( / kloc-0/0+0. 1) =0.72× 10+0.72×0. 1 =7.2+0.072 =7.272
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