Subtraction Strategies

draw a picture85 - 12 =

Step 1, draw 85.

Step 2, mark off 12.Step 3, what is left?

70 + 3 = 73

number line - subtracting45 - 17 =

Step 1, draw the number line and place the largest number line on it.

28 30 35 45 Step 2, break the smaller number into parts and subtract them. Double check to make sure you have subtracted the correct amount.

-10-2 -517 = 10 + 5 + 2

subtract in parts

219 – 125 = _____Step 1, break the smaller number into

parts.

125 = 100 – 10 – 10 – 5

219 - 100 = 119119- 10 = 109109 – 10 = 99

99 – 5 = 94

make a missing number

519 – 385 = _____

Use what you know about fact families and turn the subtraction

problem into an addition problem.385 + _____ = 519

number line – adding up55 - 39 =

Step 1, use your fact family knowledge to make the subtraction problem an addition problem.

39 49 50 55 Step 2, create a number line and place the small number on the number line. Jump on the number line until you get to the larger number.Step 3, add all your jumps back together.

+10 +5+139+_____=55

10+(1+5)=16 6

expanded form

246 - 127= _____ A B C

30 16A 200 + 40 + 6B - 100 + 20 + 7C 100 + 10 + 9 = 119

using negative numbers

232 - 149= _____ A B C

A 200 + 30 + 2B - 100 + 40 + 9C 100 - 10 - 7 = 83