Podcast
Questions and Answers
What is 88 rounded to the nearest ten?
What is 88 rounded to the nearest ten?
- 80
- 85
- 100
- 90 (correct)
What value of X makes the equation true? $74 + 238 = X$
What value of X makes the equation true? $74 + 238 = X$
- 302
- 212
- 292
- 312 (correct)
What value makes the following equation true? $2 \times 5 \times $____$= 90$
What value makes the following equation true? $2 \times 5 \times $____$= 90$
- 8
- 10
- 9 (correct)
- 11
What is 934 rounded to the nearest hundred?
What is 934 rounded to the nearest hundred?
What value of X makes the equation true? $30 \times 4 = X$
What value of X makes the equation true? $30 \times 4 = X$
Jeff has 7 dimes. Trevor has 20 nickels. How much more money does Trevor have than Jeff?
Jeff has 7 dimes. Trevor has 20 nickels. How much more money does Trevor have than Jeff?
What value makes the following equation true? $270 =$ ____ $\times 3$
What value makes the following equation true? $270 =$ ____ $\times 3$
What value of X makes the equation true? $628 - 96 = 628 - 100 + X$
What value of X makes the equation true? $628 - 96 = 628 - 100 + X$
Trey is playing a number game with his friend. His clue is: When the number is rounded to the nearest ten, it is 50. Which number does NOT match Trey's clue?
Trey is playing a number game with his friend. His clue is: When the number is rounded to the nearest ten, it is 50. Which number does NOT match Trey's clue?
When rounding to the nearest ten, what is the least whole number that rounds to 840?
When rounding to the nearest ten, what is the least whole number that rounds to 840?
When rounding to the nearest ten, what is the greatest whole number that rounds to 640?
When rounding to the nearest ten, what is the greatest whole number that rounds to 640?
What value of X makes the equation true? $821 - 36 = X$
What value of X makes the equation true? $821 - 36 = X$
What value of X makes the equation true? $642 + 8 = 600 + X$
What value of X makes the equation true? $642 + 8 = 600 + X$
Which equation shows a way to find 36 + 25?
Which equation shows a way to find 36 + 25?
Which number, when rounded to the nearest ten, becomes 370?
Which number, when rounded to the nearest ten, becomes 370?
What is 573 - 138?
What is 573 - 138?
Which expression is equal to 43 x 5?
Which expression is equal to 43 x 5?
What number makes this equation true? 23 + ______= 61
What number makes this equation true? 23 + ______= 61
Flashcards
What is 88 rounded to the nearest ten?
What is 88 rounded to the nearest ten?
88 rounded to the nearest ten is 90.
74 + 238 = X
74 + 238 = X
74 + 238 equals 312.
2 x 5 x _ = 90
2 x 5 x _ = 90
2 x 5 x 9 = 90
What is 934 rounded to the nearest hundred?
What is 934 rounded to the nearest hundred?
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30 × 4 = X
30 × 4 = X
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Who has more money?
Who has more money?
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Find the missing number: 270 = _ x 3
Find the missing number: 270 = _ x 3
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Find the missing number: 628 - 96 = 628 - 100 + X
Find the missing number: 628 - 96 = 628 - 100 + X
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Round to the nearest ten
Round to the nearest ten
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Round to the nearest ten
Round to the nearest ten
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Round to the nearest ten
Round to the nearest ten
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Round to the nearest ten
Round to the nearest ten
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What is the smallest number that rounds to 840?
What is the smallest number that rounds to 840?
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What is the largest number that rounds to 640?
What is the largest number that rounds to 640?
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821 - 36 = X
821 - 36 = X
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What number should X be?
What number should X be?
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Study Notes
Rounding to the Nearest Ten
- 88 rounded to the nearest ten is 90.
- To solve problems like this, consider the ones place to determine whether to round up or down to the nearest ten.
- The least whole number that rounds to 840 when rounding to the nearest ten is 835.
- The greatest whole number that rounds to 640 when rounding to the nearest ten is 644.
Rounding to the Nearest Hundred
- 934 rounded to the nearest hundred is 900.
- To solve problems like this, consider the tens place to determine whether to round up or down to the nearest hundred.
Solving for Unknown Numbers
- To find the unknown number (X) in the equation 74 + 238 = X, simply add 74 and 238. The result is X = 312.
- To find the unknown number in the equation 2 × 5 × = 90, first multiply 2 and 5 to get 10, then divide 90 by 10. The unknown number is 9.
- To find the unknown number (X) in the equation 30 × 4 = X, multiply 30 and 4. The result is X = 120.
- To find the unknown number in the equation 270 = × 3, divide 270 by 3. The unknown number is 90.
- For the equation 628 - 96 = 628 - 100 + X, simplify both sides to find X. 628-96 is 532, and 628 - 100 is 528. 532 = 528 + X, therefore X = 4
- To find the unknown number (X) in the equation 821 - 36 = X, subtract 36 from 821. The result is X = 785.
- To solve 642 + 8 = 600 + X, first add 642 and 8 to get 650, therefore, 650 = 600 + X. X = 50
Number Game Scenario
- Trey's clue is: When the number is rounded to the nearest ten, it is 50.
- For 51, rounding to the nearest ten would result in 50, matching Trey’s clue.
- For 45, rounding to the nearest ten results in 50, matching Trey’s clue.
- For 41, rounding to the nearest ten results in 40 which does not match Trey’s clue.
- For 48, rounding to the nearest ten results in 50, matching Trey’s clue.
Money Comparison
- Jeff has 7 dimes, which equals 70 cents.
- Trevor has 20 nickels, which equals 100 cents.
- To determine how much more money Trevor has than Jeff, subtract Jeff's total from Trevor's total: 100 cents - 70 cents = 30 cents.
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