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.
4. Rewrite the following scores into decimals for calculation. (16)
+ = + = - = + =
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)