L1 Sep. 29

Let's get READY for MATH!

​Which one doesn't belong?

​Take a look at the picture. Which one do you think doesn't belong? Why do you think that?

10 more than​ 34

​

10 more than​ 104

​

10 more than​ 88

​

10 less than​ 68

​

10 less than​ 21

​

10 less than​ 64

​

​You can subtract a multiple of ten from another multiple of ten.

Open your book to pg. 128

​Let's subtract

50-20= ?

Another way to show it...

​Let's subtract

50-20= ?

Or you can use a diagram...

​Let's subtract

50-20= ?

Choose a way to solve...

70-30=?

​Work problems 1-4 on page 125.

​We will check them together.

Multiple Choice

50-40=?

Can you explain how you solved it?

• 90

• 20

• 10

• 1

Multiple Choice

60-20=?

Can you explain how you solved it?

• 80

• 20

• 40

• 30

Multiple Choice

90-80=?

Can you explain how you solved it?

• 100

• 20

• 30

• 10

Let's look on page 130

80 - __ = 60

What goes in the blank? How do you know?

Multiple Choice

__ - 10 = 30

Can you explain how you got your answer?

• 40

• 50

• 20

• 10

Multiple Choice

30 = 90 - __

Can you explain how you got your answer?

• 20

• 60

• 40

• 30

Multiple Choice

70 - __ = 20

• 30

• 20

• 50

• 10

Let's work this together!

Work this problem. We will discuss it together!

Multiple Choice

Kerri is counting how many dog toys are in the store; she needs to reorder when there are less than 10 dog toys left. There only 5 dog toys left on the shelf and there are 12 dog toys in the storage area. How many dog toys are there in the store?

• 10 dog toys

• 15 dog toys

• 5 dogs toys

• 17 dog toys

Multiple Choice

There is a special sale for cat food. On the shelf, there are 15 cans of cat food and 12 cans of dog food. If Max moves 16 more cans of cat food to this shelf, how many cans of cat food are there on the shelf?

• 27 cans

• 31 cans

• 28 cans

• 12 cans

Multiple Choice

The waiters are too busy to clean the tables. There are 30 tables in the restaurant. 15 of the tables are taken; the rest are empty but 9 of them are dirty. Olivia quickly cleans 3 tables. How many tables are available at the moment?

• 15 tables

• 10 tables

• 6 tables

• 9 tables

Multiple Choice

13 waiters are supposed to be at work. But 4 of them called in sick. Olivia managed to call two extra waiters to come in to work. How many waiters are working today?

• 12 waiters

• 10 waiters

• 11 waiters

• 9 waiters

Poll

How do you think you did today's skill?

• GREAT!

• I might need some practice.

• I am a little confused.

• HELP!

Homework

Pages 131 - 132