Multiply by 10s, 100s, 1,000s
Solve:
20 x 20 =
400
Round each number to estimate.
32 x 29 =
30 x 30 =
900
Use any method to solve:
16 x 12 =
16 x 12 = 192
Jayden has a Pokemon collection. It has 38 pages. There are nine cards on each page. How many Pokemon cards does Jayden have all together?
38 x 9 = 342
What is the next term in this pattern?
47, 40, 33, 26...
19
Solve:
136 x 100
13,600
Round each number to estimate.
36 x 16 =
40 x 20 = 800
Use any method to solve:
71 x 46
71 x 46 = 3,266
Gracie plays video games for 45 minutes each night. How many minutes has she played in 14 days?
45 x 14 = 630
What is the rule for this pattern?
5, 10, 20, 40, 80
Rule: multiply by 2
Solve:
50 x 50 =
2,500
Estimate the product:
47 x 51
2,500
Use any method to solve:
20 x 32 =
20 x 32 = 640
The fifth graders put up 12 rows of stars for the Veterans' Day Assembly. There were 26 stars in each row. How many stars did they put up?
26 x 12 = 312 stars
Which of these numbers is a prime number?
12 13 14 or 15
13
Solve:
60 x 20 =
1,200
Round each number to estimate.
63 x 39 =
60 x 40 = 2,400
Use any method to solve:
52 x 26
52 x 26 = 1,352
Val made 22 bracelets for her friends. Hellen made 3 times more bracelets than Val. Write the equation to find out how many bracelets (B) Hellen made?
22 x 3 = B
Name the first three multiples of 8.
8, 16, 24
Solve:
479 x 10
4,790
Round each number to estimate.
72 x 38 =
70 x 40 = 2,800
Use any method to solve:
59 x 73
59 x 73 = 4,307
A pretzel factory puts 66 pretzels in each box. How many pretzels will there be in 36 boxes.
66 x 36 = 2,376
What is the missing number in this pattern?
8, 13, _____, 23, 28
18