1 x 3 Digit Multiplication
1 x 4 Digit Multiplication
2 x 2 Digit Multiplication
Estimation
Math Vocabulary
100
2 x 520
1,040
100
3 x 5522
16,566
100
12 x 12
144
100
Estimate 30 x 40
1,200
100
A number close to an exact amount or to find about how many or how much.
What is an Estimate
200
5 x 381
1,905
200
4 x 2853
11,412
200
27 x 16
432
200
Estimate 900 x 80
72,000
200
An arrangement of objects, symbols, or numbers in rows and columns. 
What is an Array
300
7 x 925
6,475
300
9 x 3465
31,185
300
35 x 70
2,450
300
Estimate 15,000 x 10
150,000
300
The product of the ones, or tens, or hundreds, and so on in multidigit multiplication.
What is a Partial Product
400
6 x 247
1,482
400
8 x 3149
25,192
400
47 x 83
3,901
400
Estimate 698 x 40
28,000
400
Finding the nearest ten, hundred, thousand, or some other place value. The usual rule is to go up if the next digit to the right is 5 or more and go down if the next digit to the right is less than 5.
Example:
463 to the nearest ten is 460.
463 to the nearest hundred is 500
What is Rounding
500
7 x 698
4,886
500
7 x 7639
53,473
500
76 x 94
7,144
500
Estimate 9923 x 782
8,000,000
500
This type of multiplication is called the _______ Method
What is the Area Method