Multiplication using Arrays (grade 2).pdf

Multiplication using Arrays

1. BARNYARD
MULTIPLICATION
BARNYARD
MULTIPLICATION MULTIPLICATION USING ARRAYS

2. write multiplication and addition sentences
to describe arrays
solve multiplication word problems using
equal groups
understand multiplication using equal
groups.
LEARNING OBJECTIVESLEARNING OBJECTIVES

3. Hi everyone! I'm Chidi, with Avery and the
legendary Grandpa Chad! Join us on our
math quest to tackle multiplication today!
Today, let us
MULTIPLY USING
ARRAYS

4. Learning Objective #1
Understand
multiplication using
arrays

5. MULTIPLICATION USING
ARRAYS
MULTIPLICATION USING
ARRAYS A multiplication array is a visual representation of a
multiplication fact using rows and columns. 3 x 4 = ? This means we
have 3 rows of 4. 3 x 4 = 12

6. A row is a line of things that go side to side.ROWSROWS EXAMPLE 1EXAMPLE 1 3 x 4 = ? Let us count the
rows. rows 3

7. A column is a line of things that go up and down.COLUMNSCOLUMNS EXAMPLE 1EXAMPLE 1 3 x 4 = ? Let us count the
columns. columns 4

8. We just picked fresh sunflowers from our
farm. Let’s do some array exercises
together!

9. 3 x 5 = ? EXAMPLE 2EXAMPLE 2
There are 15 flowers in total. Hence, 3 x 5 = 15. 3 rows of 5

10. 2 x 6 = ? EXAMPLE 3EXAMPLE 3
There are 12 flowers in total. Hence, 2 x 6 = 12. 2 rows of 6

11. 4 x 5 = ? EXAMPLE 4EXAMPLE 4There are 20
flowers in total.
Hence, 4 x 5 =
20. 4 rows of 5

12. 2 x 4 = ? 3 x 6 = ? Answer the following by
drawing an array.
Answer the following by
drawing an array.

13. 2 x 4 = ? 3 x 6 = ? ANSWERS:ANSWERS: 3 x 6 = 18 2 x 4 = 8

14. Learning Objective #2 Write multiplication
and addition
sentences
to describe arrays.

15. MULTIPLICATION SENTENCE
3 x 6 = 18
ADDITION SENTENCE
6 + 6 + 6 = 18 Write a multiplication and an addition
sentence based on the array below.

16. MULTIPLICATION SENTENCE
ADDITION SENTENCE
3 x 3 = 9
3 + 3 + 3 = 9Write a multiplication and an addition
sentence based on the array below.

17. MULTIPLICATION SENTENCE
ADDITION SENTENCE
2 x 5 = 10
5 + 5 = 10Write a multiplication and an addition
sentence based on the array below.

18. solve multiplication
word problems
using arrays Learning Objective #3

19. READ AND SOLVEREAD AND SOLVE Grandpa Chidi has a garden
with 3 rows of sunflowers.
Each row has 7 sunflowers
growing tall andabright.
How many sunflowers are in
Grandpa Chidi’s garden?

20. ANSWERANSWERThere are 21
sunflowers in
total.
3 x 7 = 21.

21. READ AND SOLVEREAD AND SOLVE Avery arranged 2 rows of
bouquets in her flower stall.
Each row has 5 sunflower
bouquets. How many
sunflower bouquets did
Avery arrange in total?

22. ANSWERANSWERThere are 10
bouquets in
total.
2 x 5 = 10.

23. Assignment Create two multiplication word
problems using a scenario in a
sunflower farm. Solve using
arrays.