Vocabulary
The answer to an addition problem.
What is the sum?
10 x ?= 50
5?
5 multiplied by ? equals 5.
5 x 1 = 5
1 x 1 = ?
1
Round 11 to the nearest ten.
10
The answer to a subtraction problem.
What is the difference?
10 6 = ?
1,000,000 or one million
3 x 6 = ?
18
2 x 22 = ?
44
Round 15 to the nearest 10.
20.
An educated guess using a strategy. I.e., rounding.
What is an estimate?
10 x 10 x 10 x 10 = 10?
104
9 x ? = 54
6
4 x 12 = ?
48
Round 123 to the nearest hundred.
100.
The answer to a multiplication problem.
What is a product?
? x 1,000 = 28,000
28
7 x 8 = ?
56
7 x 9 = ?
63
Round 1,898 to the nearest thousand.
2,000.
The small number placed to the upper right of a base number. Represents the number of times the base has to be multiplied by itself.
What is an exponent?
The exponent is 103. The expression is...
Is the expression 10x10x10?
8 x ? = 64
8
6 x 8 = ?
48
Estimate 12 x 42.
400