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Review cuối kỳ II lớp 4
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The average of 2 numbers is 294, one number is 145; what is the other number?
294 x 2 -145 = 443
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1/2 , 3/5 , 5/4 , 4/3
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Caculate: 23 x 8 x 25
4600
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The sum of two numbers is 40, and their difference is 10. Find the product of these numbers.
25 & 15
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Round number 3617 to the nearest hundreds
3600
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Round 14125 to the nearest thousands
14000
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7/10
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Which operation has the smallest value? _________ [A. 140 x 10] ____ [B. 125 x 8] ____ [C. 120 x 12] ____ [D. 130 x 14]
B
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The mean of 3 numbers is 202. Two of them are 197 and 201. Find the other number.
202 x 3 - 197 - 201 = 208
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Find the average: 15, 24, 39
(15 + 24 + 39) : 3 = 26
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Find the sum of 6 numbers provided that their average is 54
54 x 6 = 324
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29 + 68 - 54 = 43 => a = 4
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What is the product of 145 and 3 ?
145 x 3 = 435
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Find the mean of the following numbers: 28, 46, 71, 90, 110
(28 + 46 + 71 + 90 + 110) : 5 = 69
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8
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There are 840 oranges that need to be packed into baskets. Each basket holds 10 oranges. How many baskets are needed?
840 : 10 = 84
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Emma has 8 bags, each of them contains 35 chocolate bars. How many chocolate bars does Emma have in total?
8 x 35 = 280
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The quotient is 25, the divisor is 10. What is the dividend?
25 x 10 = 250
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