Multiplication
Rounding
Common Factors
Greatest Common Factor
Prime & Composite
100
What is 2 x 2?
4
100
What is rounding?
Changing a numbers value by rounding a place value
100
What is a common factor?
A number that is a factor of both numbers.
100
What is a greatest common factor?
The largest factor that is in both numbers compared.
100
What is a composite number?
A number that has 3 or more factors; being 1, itself and more.
200
What is 5 x 6?
30
200
When do we round up?
When the rounding value is 5 or more.
200
What are the common factors of 8 and 12?
1,2,4
200
What is the greatest common factor between 4 and 8?
4
200
What is a prime number?
A number that's only factors are 1 and itself.
300
What is an accurate estimate for 43 x 29?
40 x 30 = 120
300
What is our new value when we round 350?
400
300
What are the common factors of 15 and 20?
1, 5
300
What is the greatest common factor in 12 and 15?
3
300
Is the number 19 prime or composite?
prime
400
What is 7 x 12?
84
400
What is 5460 rounded to the nearest hundred?
5500
400
What are the common factors of 32 and 40?
1, 2, 4, 8
400
What is the greatest common factor in 21 and 35?
7
400
What are the composite numbers between 21 and 31?
21, 22, 24, 25, 26, 27, 28, 30
500
What is 19 x 8?
152
500
What is 54987 rounded to the nearest thousand?
55,000
500
What are the common factors of 21 and 35?
1, 3, 7.
500
What is the greatest common factor in 54 and 60?
6
500
What are all of the composite numbers between 51 and 61?
52, 54, 55, 56, 58, 60
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