300÷ 125÷8=300÷( 125×8)=300÷ 1000=0.3

396-96- 172-28 =(396-96)-( 172+28)= 300-200 = 100

125*24 = 125*8*3 = 1000*3 = 3000

26* 15 = (20+6)* 15 = 20* 15 + 6* 15 = 300+90 =390

25*99*4 = 25*4*99 = 100*99 = 9900

250*32 = 250*4*8 = 1000*8 = 8000

(98+98+98+98)*25 = 4*98*25 = 4*25*98 = 100*98 = 9800

472*5*20 = 472*(5*20)= 472* 100 = 47200

125*(8+800)= 125*8+ 125*800 = 1000 + 100000 = 10 1000

129*38+38*872-38 = 38*( 129+872- 1)=38* 1000=38000

18*8* 125*5 = 18*5*( 125*8)=90* 1000 = 9000

1384-(450+384) = 1384-384-450 = 1000-450 = 550

37*99 = 37*( 100- 1)= 37* 100 - 37 = 3700-37=3663

82*98 = 82*( 100-2)=8200- 164 = 8036

202*28 = (200+2)*28 = 200*28+2*28 =5600+56 =5656

76* 105 = 76* 100 + 76*5 = 7600+380 = 7980

82* 14+ 18* 14 = 14*(82+ 18)= 14* 100= 1400

69*99+69 = 69*(99+ 1)=69* 100 = 6900

49× 102-2×49 125×76×8 8.33-2.43-4.57

103×32 6.7+ 2.63+4.3 4 1000÷8÷ 125

5824÷8×(85-78) 840÷28+70× 18

40 times 13 times 25 480 divided by 32 120 divided by 5 divided by 4.

38 times 20 1 45 times 97-7 times 45 2 1 times 4 1 minus 2 1.

35 times 22 plus 35 times 36+35 times 22 44 times 198 125 times 25 times 8 times 40.

95 times 53 plus 53 99 times 125 45 times 10 1 minus 45.

138-43-57-38

1.498+397

2.502-399

3.63-45-55+ 137

4. 125×56

5.302×99+302

6. 145×89+ 145×2 1

1、475+254+36 1 2、6 15+475+ 125 3、860- 168+ 159

4、465+358-27 5、647-(85+265) 6、476+(65-29)

7、 154×8÷ 16 8、400÷25×75 9、 16×25÷ 16×25

10、552÷69×8 1 1、600- 120÷ 10 12、(600- 120)÷ 10

13、(466-25×4)÷6 14、(43+32)÷(357-352)

15、 138+(27+48)÷25 16、56× 19+25×8

Second, use a simple method to calculate.

1、368+2649+ 135 1 2、 89+ 10 1+ 1 1 1

3、24+ 127+476+573 4、400-273- 127

5、327+(96- 127) 6、72×98

7、442- 103- 142 8、999+99+9

9、67×5×2 10、25×(78×4)

1 1、72× 125 12、9000÷ 125÷8

13、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+226-95

(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

( 13)264×97+4×264

( 14)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

396-96- 172-28 =(396-96)-( 172+28)= 300-200 = 100

125*24 = 125*8*3 = 1000*3 = 3000

Nine sets of calculation problems in fourth grade mathematics

Elementary school mathematics fourth grade calculation problem clearance exercise one

First, please calculate.

0.38+0.6= 155-(60-55)= 64.2+5.7= 643-27-73=

0.97-0.09= 12.8-9.86= 17.08-4.58 = 9900÷25÷4=

3.5+0.6= 5-0. 15= 4.35+5.35= 99×55+55=

0.8 1+0.09= 0÷78= 60-20÷5= 47×25×4=

0.5+0.5= 0.5-0.5= 0.5×0.5= 0.5÷ 1=

Second, please use recursive equation to calculate.

72-9×8÷6 3600÷(20÷5) (450+27) ÷(2 1- 18)

86.7-( 14.8-3.3 ) 70-( 12.87+0.75) 84.6-(26.3-8.3)

Can you think of a simple way to calculate the following questions?

87-3. 12-0.88 6.74+ 12.62+24.38+3.26 88× 125

37.65-(7.65+5.4) 34×7+65×7+7 38×38+38×62

4. Calculate by decimals.

6m 45cm+3m 5m 10kg-3kg 700g

Customs clearance exercise of fourth grade calculation problems in primary school mathematics II

1, oral calculation

1.3-0.8= 630÷90= 6-0.37= 0× 100+ 100=

60×0= 2.73+0.27= 0.75+0.3= 5×9+ 1=

4.3÷ 1000= 0.69+ 1. 1= 300× 18= 7+7×9=

2. Calculating the following questions can be as simple as it is.

49× 102-2×49 125×78×8 8.33-2.43-4.57

99×37 6.7-2.63+3.3-3.37 4 1000÷(4 1×5)

3.5×72+6.5×28 5824÷8×(85-78) 840÷28+70× 18

3. Add parentheses to the following formula as needed.

( 1)72+360÷9-5 (2)72-4×6÷3

① Subtraction, division and final addition ① Subtraction, multiplication and final division.

② Do subtraction and addition before division; ② Do subtraction and division before multiplication.

③ Calculate division first, then subtraction, and finally addition; ③ Calculate multiplication first, then subtraction, and finally division.

Elementary school mathematics fourth grade calculation problem clearance exercise three

1. Oral calculation:

2.5×4= 8.4÷4= 3- 1.4= 1.3÷ 100= 120×6=

85-58= 2.5+0.05= 45×20= 100×2.8= 8×9+8=

7×5÷7×5= 125×7×8= 10―(2.3+2.7)= 7×99+7= 0.5+ 1.5=

120÷6÷2= 4×(36-25)= 0.5+0.5= 0.5-0.5= 300-84- 16=

2. Calculate the following questions vertically and check them.

10-3.06 1 1.36+8.54

3. Calculate the following questions, and simplify what can be simplified.

6.45-0.58- 1.42 3.27+6.4+2.73+4.6 12000÷ 125×8

25×44 125×32×25 ( 160+880)×20

99×45 102×36 12×(324-285)÷26

Elementary school mathematics fourth grade calculation problem clearance exercise four

1, (1) 36 plus the quotient of 36 divided by 720, and then subtract 6, what's the difference?

What is the sum of the difference between the quotient of 36 plus 720 divided by 3.6 and subtracted by 6?

(3) What is the quotient of 36 plus 720 divided by 3.6 and minus 6?

2. (1) 72 Subtract the product of 4 times 6 and divide it by 3. What's the difference?

What is the quotient of 72 minus 4 times 6 and then divided by 3?

(3) What is the product of the difference between 72 minus 4 multiplied by the quotient of 6 and 3?

What is the sum of 3.558 plus 230 times 6.2 and then divided by 3 1?

⑵ What is the product of the sum of 558 and 230 multiplied by the quotient of 6.2 and 3. 1?

⑶ What is the quotient of 558 plus the product of 230 and 6.2 divided by 3. 1?

4. What is the sum of (1) 59 plus 2. 1 multiplied by 9.6 and divided by 8?

What is the product of the sum of 59 and 2 1 multiplied by the quotient of 8 divided by 96?

(3) What is the quotient of the sum of 59 and 2 1 multiplied by 96 and divided by 8?

Elementary school mathematics fourth grade calculation problem clearance exercise five

1. Add parentheses or square brackets according to the operation order:

(1) 32× 800-400 ÷ 25 Subtract first, then multiply, and finally divide.

(2) 32× 800-400 ÷ 25 Divide first, then subtract, and finally multiply.

(3) 32× 800-400 ÷ 25, subtraction first, division later and multiplication finally.

2. Recursive equation calculation:

2400÷80- 14×2 108-(83+360÷60) (420+48)÷(375-345)

420÷(205- 198)×4 460÷(29- 18÷3) 1450÷2×( 16+9)

3, how to calculate how simple:

7 15+265+335+285 125×32×5 46×20 1

7 100- 137-263+300 75×4×2×5 99×64+64

3, column calculation:

How many times is the product of (1)25 and 40 the sum of 163 and 87?

② Eight times of a number is 10 greater than 54. What's this number?

The fourth grade of primary school mathematics calculation problem clearance exercise six

First, the number of direct writing:

400÷50= 99÷33= 18×50= 470+70=

14×4= 750÷50= 1400÷70= 6× 120=

480÷40= 620-30= 2 17-65-35= 30-30÷5

12×6+8= 5×4×6= 84÷4÷7= 36÷9×5=

Second, the vertical calculation:

996÷ 83= 580 ÷ 18= 4 140 ÷40=

Third, use recursive equation to calculate.

490÷70× 154 774÷( 17+26) 47-28+33

320-770÷ 1 1×3 960÷32+ 15× 1 1 45 1-( 164-88)÷3

Fourth, simple calculation:

34+3.46+0.66 74+( 167+26) 37-56+73-44

2.5×36 4.5× 108 248+302 6.7× 12×5

Elementary school mathematics fourth grade calculation problem clearance exercise seven

First, oral calculation:

60×9= 50×90= 600÷30= 20×3.4=

4.3×2= 1. 1×600= 1.3×600= 7.5- 1.8=

70-30= 8000-3000= 120÷3= 3×900=

900÷3= 320÷3= 2 10×4= 25× 100=

Second, with vertical calculation:

3.8×250= 7580÷5.4= 140×250=

508× 1.5= 8500÷70= 40800÷340=

Third, simple calculation:

5.5×22+78× 5.5 203×4.6 203×46-3×46

99×78 49×99+99 98× 10 1 98× 10 1-98

49×99+49 45+45×26+45×73 38×36-36×8

1.25×32×2.5 43+57-43+57 24×5-24×5

24×5÷24×5 576-203 289+ 104

Elementary school mathematics fourth grade calculation problem clearance exercise eight

1, write directly.

6.2×3= 0×65+5= 7.7×20= 6+ 1.8+84=

9.8+ 1.2= 42× 1×5= 1.2×25= 9×5÷5×9=

460+280= 8 10÷27= 540÷270= 240×30=

2. Calculate the following questions. (What can be simplified should be simplified)

874÷(24×23-506) 25×5÷( 155-30) 25×99

25× 16 48×(39-594÷33) (40+4)×2.5

96× 10 1-96 486-( 186+59)-4 1 863-297

3, column comprehensive formula calculation.

What is the product of (1) 4.5 times 4.5 minus 2.7?

(2) What is the sum of the products of 5.6 plus 4.8 times 3?

(3) What is the quotient of the product of 28.8 divided by 1.8 multiplied by 4?

Elementary school mathematics fourth grade calculation problem clearance exercise nine

First, use vertical calculation.

2 1.5÷2.4= 900÷2.4= 5.6×0.35=

Second, off-type calculation.

175-75÷25 68+35× 13 7.25-( 1.25+2.37)

( 1 1.4+ 16.6)÷35 43.2÷(9×8) 189-60+40

Third, simple calculation.

52+9.9 2.5×32 47+23.6+6.4

6×( 15×9) 402+359 4.3+7.8+ 12.2+25.7

2.5×(26×4) 25×44 3.54+(229+0.46)

25× 14×4

=25×4× 14

= 100× 14

= 1400

. 125× 19×8

= 125×8× 19

= 1000× 19

= 19000

.20×8×5

=20×5×8

= 100×8

=800

6×26+4×26

=(6+4)×26

= 10×26

=260

Simple operation problem of addition algorithm (1)

1) 500+(407+0)= 2) 386+382+ 1 14=

3) 42+(9 1+ 158+ 109)= 4) (87+ 103+ 1 13)+97=

5) (246+387+ 154)+ 13= 6) 49+(7 1+ 15 1+ 129)=

7) 255+(79+45)= 8) ( 169+39+ 13 1)+26 1=

9) 2 19+ 175+ 18 1+225= 10) 14+498+486=

1 1) (404+ 195+96)+305= 12) 793+393=

13) ( 106+45+94)+ 155= 14) 433+(477+67)+23=

15) 25+(25 1+275+49)= 16) 5 1+(5+49)=

17) (83+33+ 17)+67= 18) 196+97=

19) 4 1+(33+59)= 20) 290+ 17 1+2 10+329=

2 1) 1000+499= 22) 226+( 166+74)=

23) 63+(82+ 137)+ 1 18= 24) 354+479+ 146=

25) 76+(44+ 124)+ 156= 26) 270+(96+230+404)=

27) 108+2 15+292+ 185= 28) (89+89)+( 1 1+ 1 1)=

29) 108+(22 1+ 192+79)= 30) 257+60+ 143+340=

3 1) 56+( 143+ 144)= 32) (259+349+ 14 1)+5 1=

33) ( 198+252+ 102)+48= 34) 80+(43+20+57)=

35) 434+238+66= 36) 92+(34+ 108)+ 166=

37) 82+(78+2 18+222)= 38) (54+ 150)+( 146+50)=

39) 254+( 144+246+356)= 40) 176+(236+ 124)+64=

4 1) 62+2 19+238+8 1= 42) (6+66+94)+34=

43) ( 140+ 125+ 160)+ 175= 44) 13+(287+387)=

45) 200+95= 46) 1002+495=

47) 370+430+ 130= 48) 159+ 140+4 1+60=

49) 195+( 14 1+205+259)= 50) 3 1+(62+69)=

Simple operation of addition and subtraction (1)

1) 7 13-(387+3 13)= 2) 866-370- 130=

3) 399- 195= 4) 400- 199=

5) 807-40 1= 6) 397- 196=

7) 369-(246+69)= 8) 594-300=

9) 480-78- 1 16-206= 10) 982+(30-482)=

1 1) 656-(300- 144)= 12) 5 14+(434- 14)=

13) 756-272-(5 1+77)= 14) 594+( 193-94)=

15) 146-(56-54)= 16) 597- 196- 104=

17) 760-(2+79)-3 19= 18) 200-93=

19) 227-( 170+27)= 20) 282-9-( 1+ 190)=

2 1) 152-3 1-( 12+57)= 22) 365-(55+89)-56=

23) 206- 106= 24) 392-( 109+54)-37=

25) 344- 143-95-62= 26) 556-98-( 170+32)=

27) 266-( 158+66)= 28) 377-( 13 1-23)=

29) 349-(24+5 1)- 125= 30) 529-(388-27 1)=

3 1) 606-303= 32) 234-( 18 1- 166)=

33) 753-449-5 1= 34) 399-30-( 123+ 147)=

35) 56 1-( 17 1+ 1 14)- 1 15= 36) 333-( 19 1-67)=

37) 405-(46+4 1)-2 13= 38) 6 17-60-(20 1+239)=

39) 842- 12- 135-353= 40) 599-300=

4 1) 699-(25+299)= 42) 122+(55-22)=

43) 820-93-407= 44) 630- 103- 12-385=

45) 254-( 186- 146)= 46) 76 1-( 19 1+26 1)=

47) 709-( 102+39)-259= 48) 207-96=

49) 666-338-62= 50) 120-(9 1-80)=

Simple operation problem of multiplication algorithm (1)

1) 402×389= 2) 72×25=

3) 55