What is the value of the digit 2 in 462,800?
2,000!
is 4,582 more less or greater than 4,528?
Greater than!
Add 3,450 + 2,300
5,750!
Multiply: 40 × 20
800
List all the factors of 15
1,3,5, and 15
What is 400,000 + 60,000 + 2,000 + 300 + 7 in standard form?
462,307!
Round 54 to the nearest ten
50
Subtract 8,600- 400
8,200!
Multiply: 1,326 × 4
5,304
What are the first four multiples of 4?
4, 8, 12, 16
8,000 is ten times as much as.....
800!
Round 5,677 to the nearest hundred
5,600
Elena solved 5,000 − 2,345 and got 3,345. Use estimation to explain why her answer must be wrong, then find the correct difference.
2,345 rounded to the nearest thousand is 2,000. 5,000- 2,000= 3,000. That is much less than 3,345. 5,000 - 2,345 = 2,655 which is closer to 3,000
Use an area model to solve 23 × 16
368
What are all the factor pairs of 24?
(1,24), (2,12), (3,8), (4,6)
The value of a digit is 300. What is its value if it shifts one place to the LEFT?
3,000!
Order these numbers from least to greatest: 55,520 55,323 55,765
55,323 55, 520 55,765
6 times as many as 7 is what number
42
A baker makes 8 trays with 24 muffins each, then sells 150 muffins. How many are left?
8x24=192 192-150=42
Is 7 a prime number or a composite number?
Prime
Devon write 500,000 + 40,000 + 600 + 9 and said it equals 546,009. Is he correct? Explain his error.
The correct answer is 540,609. He thought the 600 was in the thousands place instead of the hundreds.
A number rounds to 5,300 when rounded to the nearest hundred. What is the smallest whole number and largest whole number it could be?
5,250 vs 5,349
72 is how many times as many as 9?
8!
Ben bought 3 games at $19 each and paid with a $100 bill. He says his change was $43. Use estimation to explain whether his answer is reasonable, then find the exact change.
19 rounded up is 20. 3x20=60 100-60=40 so it is reasonable. 3x19=57 100-57=43
Tyler says all odd numbers are prime. Give an example that proves he is wrong
ex. 25. All numbers than end in a 5 are a multiple of 5 and so they are composite numbers. 5 is an odd number.