Multiplication as Equal Groups
3 + 3 + 3 + 3 = __________ × __________
4 x 3 or 3 x 4
7 × 7 = ______
49
5 × 8 = 40
6 × 8 = _______________
40+8= 48
Find the area of a rectangle with a width of 3 units and a length of 6 units.
3x6= 18
18 square units
At the deli, each sandwich costs $8. George buys 4 sandwiches. How much did George spend?
$8x4=$32
5 + 5 + 5 + 5 + 5 + 5 + 5 = __________ × __________
7 x 5 or 5 x 7
__________ × 4 = 32
8
16 × 4 = 64
17 × 4 = _______________
64 + 4= 68
Find the area of a rectangle with a width of 2 units and a length of 9 units.
2 x 9= 18
18 square units
Randy bakes 6 batches of cookies. There are 8 cookies in each batch. How many cookies does Randy bake?
6x8=48 cookies
Rewrite the multiplication expression as repeated addition.
5 × 9 = _________
9+9+9+9+9
9 × __________ = 54
6
14 × 6 = 84
13 × 6 = _______________
84 + 6= 90
The area of this rectangle is 40 square units. The width is 5 units. What is the length?
5 x ___ = 40
5 x 8= 40
The length is 8 units.
A bookshelf has 4 shelves. Each shelf contains 12 books and 5 magazines. How many total books are in the bookshelf?
4x12= 48 books
Notice how the question asks for total books NOT total items.
Rewrite the multiplication expression as repeated addition.
7 × 4 = _________
4+4+4+4+4+4+4
7 × __________ = 42
6
15 × 5 = 75
15 × 6 = _______________
75+15= 90
The area of this rectangle is 54 square units. The length is 9 units. What is the width?
9 x ____ = 54
9 x 6= 54
The width is 6 units.
Kyle has 6 packs of markers. Each pack has 7 red markers and 2 blue markers. How many markers does Kyle have in total? Explain how you know.
7+2=9 markers
9x6= 54 markers
8 + 8 + 8 = _______________ × _______________
3 x 8 or 8 x 3
Emma’s book has 72 pages. She reads 9 pages each day. How many days did it take Emma to finish her book?
9 x ____ = 72
9 x 8 = 72
It took Emma 8 days
Given that 5 × 13 = 65, find 6 × 13. Explain how you know.
6 x 13 is 78. I know this because 5 x 13 is 65. If you add one more group of 13 to 65, you get 78. 65+13=78
John has a rectangle that is 7 units long and 7 units wide. Stacy has a rectangle that is 6 units long and 8 units wide. John says his rectangle is larger than Stacy's. Is John right? How do you know?
John is correct. To find the area of John's rectangle, you need to multiply the length and the width. 7x7= 49 square units. Stacy's area is 6x8= 48 square units. This proves that John's rectangle is larger than Stacy's.
There are 15 buffalobsters. Each buffalobster eats 4 apples. How many apples are eaten altogether?
15x4= 60 apples
10x4= 40
5x4=20
20+40=60