Chapter 3 Subtraction My Math 3

In the subtraction number sentence, which number is the 'difference'?

100 - 23 = 77

Fill in the missing number to complete the number sentences.

745 - 239 = ___

___ + 239 = 745

Which number sentences match the subtraction rule?

**When you subtract a number from itself, you get a 0.

• 2,709 - 2,709 = 0

• 1,501 - 1,501=0

• 500-499 = 1

• 500-299 = 201

• 1,600 - 0 = 1,600

Which number sentences match the subtraction rule?

**When you subtract 0 from a number, you get that number.

• 2,709 - 2,709 = 0

• 1,501 - 1,501=0

• 5,200 - 0 = 5,200

• 500-299 = 201

• 1,600 - 0 = 1,600

($14 + $9 + $17) - $22 =

What can you NOT use to subtract mentally?

• subtraction rules

• make a 10 or 100

• break apart

• Commutative Property

• inverse operation

Which strategy is best to use to find the difference?

554 - 199 =

• make a 10 or 100

• break apart

• subtraction rule

• There's no answer.

What word means the answer to a subtraction problem?

True or False:

When we subtract, we start with the greatest place value.

Which is NOT a way to write 407?

• 4 hundreds, 0 tens, and 7 ones

• 400 + 0 + 7

• 4 7

• four hundred seven