OD2. U7. Reading

What is subtraction?

• When we subtract things, we take them away from other things.

• When we subtract things, we join them together.

All subtraction problems have a __________.

• star

• plus sign

• minus sign

What does it minus sign tell us?

• It tells us to subtract 4 from 9.

• It tells us to subtract 5 from 9.

How do we write subtraction math problems for single-digit numbers?

• in a row

• in a column

• in a diagonal

How do we write subtraction math problems for double-digit numbers?

• in a row

• in a column

• in a diagonal

• There were 2 cookies left.

• There were 3 cookies left.

• There were 20 grapes left.

• There were 15 grapes left.

When we count backward, how many do we subtract each time?

• 3

• 1

• 10