Page 163 - NUMINO TG_3A

10Unit 99 0 ??

jOb ective Use model blocks to multiply tens by a 1-digit number.

1. Textbook Instructions UNIT

Have students learn how to multiply the tens 10 99 0=??
by a 1-digit number by using model blocks.
Draw lines to match each model to correct multiplication sentence and
Can you match the model blocks to the number.
multiplication problem?
What is the multiplication problem and 90
product for this model?

The multiplication problem is 4 10. The
product is 40.
How many groups of tens are there in this
picture?

There are four groups of two tens.
How can you write a multiplication
problem for this?
4 20.
What is the product of 4 20? 80.
Explain how you found the product of
4 20.
A1: 4 20 is the same as 20 20 20 20.

So, the answer is eighty.
A2: If you count all the blocks in the picture,

you get eighty.
A3: There are eight tens. So, there are eighty

blocks in total.

2. Build Understanding

Use Methods to Teach Multiplication
The Model Blocks
For the multiplication problem, 2 14, you can add 14 and 14. To find the sum of these numbers using
model blocks, count two base-ten blocks and four base-one blocks.

14 14 28

145 NUMINO Teacher s Guide