Prime Factorization
What is the prime factorization of 24?
2 x 2 x 2 x 3
OR
23 x 3
What is the product of 10 x 10 x 10 written using an exponent?
103
What is the value of 100 x 6 using mental math?
600
Which is the best estimate of 6 x 22 by using rounding or compatible numbers?
120 (6 x 20)
What is the value of 54 x 3?
150
What is the prime factorization of 42?
2 x 3 x 7
What is the value of 8 x 104?
80,000
What is the value of 50 x 7 using mental math?
350
Which is the best estimate of 23 x 52 using rounding or compatible numbers?
1,000 (20 x 50)
What is the value of 132 x 4?
528
What is the prime factorization of 12?
2 x 2 x 3 OR 22 x 3
Write out 46.
4 x 4 x 4 x 4 x 4x 4
What is the value of 20 x 40 using mental math?
800
Which is the best estimate of 104 x 7 by using rounding or compatible numbers?
700 (100 x 7)
What is the value of 22 x 7?
154
Which number is prime?
4, 11, 21, 30, 14
11
What do we call a number that has an exponent of 2? Such as in 102?
We say that the number is squared (10 squared)
What is the value of 200 x 10 using mental math?
2,000
When we estimate a number. such as 13, we want to estimate to the nearest ______ (place value)
tens.
What is the value of 112 x 18?
2,016
A prime number only has two factors 1 and ________
itself.
What do we call a number with an exponent of 3? Such as in 103?
cubed (such as 10 cubed)
What is the value of 400 x 60 using mental math?
24,000
Compatible numbers are numbers that we can easily multiply in our head. Estimate the answer to this question using compatible numbers.
25 x 13
25 x 10 = 250
What is the value of 532 x 13?
6,916