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Vocabulary
Factors
Estimating
Multiplying by Two Factors
100
To find an answer that is close to the exact answer
estimate
100
54 x 32 = 1,728 What are the two factors in this problem?
54 and 32
100
Estimate. 33 x 64
1800
100
Solve the problem. 34 x 20
34 x 20=680
200
The answer in a multiplication problem
Product
200
68 x 20 = 1,360 What are the two factors in this problem?
68 and 20
200
Estimate. 67 x 56
70 x 60 = 4,200
200
Solve the problem. 21 x 20
21 x 20 = 420
300
The answer in an addition problem
Sum
300
Todd and Jim both have toy cars. Todd has 20 cars. Jim has 3 times as many cars. How many cars does Jim have? What two factors are multiplied to solve this problem?
20 and 3
300
Estimate. 12 x 90
10 x 90 = 900
300
Solve the problem. 16 x 19
16 x 19 = 304
400
When ones, tens, and hundreds are multiplied separately and then the products are added together
Partial Product
400
It takes Maria 55 seconds to run around the track. It takes Jake 4 times as long to run around the track. How long does it take Jake to run around the track? What two factors would you multiply to solve this problem?
55 and 4
400
Estimate. 56 x 46
60 x 50 = 3,000
400
Solve the problem. 23 x 25
23 x 25 = 575
500
The property that states when the order of two factors is changed, the product remains the same
Associative Property
500
Julia, Andy, and Ashley are counting their trading cards. Julia has 13 cards. Andy has 5 times as many as Juia, and Ashley has 3 times as many as Andy. How many cards does Andy have? What factors would you multiply to solve this problem?
13 and 5
500
178 x 67 =
200 x 70 = 14,000
500
Solve the problem. 27 x 39
27 x 39 = 1,053