Multiply by Powers of 10
1 x 3 Digit Multiplication
2 x 3 Digit Multiplication
2 x 2 Digit Multiplication
Estimation
Math Vocabulary
100
101 x 1296
12,960
100
2 x 520
1,040
100
32 x 552
17,664
100
12 x 12
144
100
Estimate 32 x 44
1,200
100
A number close to an exact amount or to find about how many or how much.
Estimate
200
102 x 39
3,900
200
5 x 381
1,905
200
41 x 207
8,487
200
27 x 16
432
200
Estimate 911 x 81
72,000
200
An ________________ is a set of steps used to solve a problem.
Algorithm
300
12 x _____ = 120,000
104
300
7 x 925
6,475
300
93 x 465
43,245
300
35 x 70
2,450
300
Estimate 15,328 x 14
150,000
300
The product of the ones, or tens, or hundreds, and so on in multidigit multiplication.
Partial Product (Area Model)
400
18 x ______ = 18,000,000
106
400
6 x 247
1,482
400
83 x 149
12,367
400
47 x 83
3,901
400
Estimate 698 x 43
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.
What is Rounding
500
70 x 104
700,000
500
7 x 698
4,886
500
77 x 639
49,203
500
76 x 94
7,144
500
Estimate 9923 x 782
8,000,000
500
The answer to a multiplication problem is called a ________?
Product