TUESDAY DECEMBER 15TH

TUESDAY DECEMBER 15TH

Math

Today we will learn how to....

SUBTRACT USING PLACE VALUE BLOCKS

What is a place value block?

We have seen them before :

these are value blocks

so now let's subtract

let's subtract 17 from 90

this is 9 tens

to take away 17

we need to take away 1 ten and 7 ones

we Xed out 17 blocks

now we have 7 tens and 3 ones

Multiple Choice

So what is 7 tens and 3 ones

• 37

• 73

7 tens and 3 ones is

73

Using Place value blocks...

We determined that 90-17 equals 73