📊🤔 Explore C - Lesson 3.2 Multiplication as Equal Groups

Sara loves to read. At home she has a bookshelf of 5 shelves with 8 books on each shelf. How many books does Sara have?

What is an addition equation for this problem?

$8+8+8+8+8=40$

What is a multiplication statement?

5 groups of 8 is 40.

What is a multiplication equation for this problem?

$5\times8=40$

5 shelves = number of groups

8 books = number in each group

Let's practice writing multiplication statements and equations for each of the following.

a) $7+7+7+7+7+7+7+7=56$

Multiplication statement:  8 groups of 7 is 56.

Multiplication equation:  $8\times7=56$

b) $5+5+5+5+5+5+5+5+5=45$

Multiplication statement:  9 groups of 5 is 45.

Multiplication equation: $9\times5=45$

c) $2+2+2+2+2+2+2+2+2+2=20$

Multiplication statement:  10 groups of 2 is 20.

Multiplication equation:  $10\times2=20$