Mathnasium #MathTricks: Half of Double Digit Numbers

Jan 19, 2022 | Yukon

Be sure to check out our Mathnasium #MathTricks on Facebook.     This week's math trick is all about finding half!


A trick to make mental math easier is breaking whole numbers down into its parts.  We can do this to find half of double digit numbers.

For example, let's find half of 26.

Since 26 is 2 tens (20) and 6 ones (6), we can find half of 26 by finding half of 20 and then half of 6. Half of 20 is 10, and half of 6 is 3, so half of 26 is 10 + 3 = 13.

half of 26 13.

Try out our worksheet below for more practice problems!