Subtraction
Tricks
TRICK #3: Subtracting by Adding
Subtract: 32 - 19
You would subtract 19 from 32 to solve this problem. Let's try adding instead of subtracting! You'll see that it is easier to add than to subtract. It is also easy to add by tens. To calculate 32-19, you can ask yourself, “19 plus what will equal 32?” Think, 19 + 10= 29. Then 29 + 3 = 32. Finally, add up the numbers you added 10 + 3= 13.
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