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MentalMathsWorkbook - Simple Subtractions

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Let us say that you had 5 cherries:

x x x x x
1 2 3 4 5

And you gave 2 cherries to your friend. How many cherries would you now have?

x x x
1 2 3

In math we write the above like this:

x

So, the answer is 3.

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You can also use the digits of your hands to solve subtraction problems. Count the digits of your hand. Since each palm has five fingers, and each finger has 3 digits, and using your thumb, you can count up to 12 on each palm.

x

Now, to subtract 2 from 4, count 4 digits with your thumb. Then, to subtract 2, count back. Now, your thumb should be on the 2nd digit of your first finger. Therefore, the answer is 2.

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