In these First Grade math worksheets, students practice adding 10 to a 2-digit number (a number less than 100). When adding 10 to a number, increase the tens digit by 1 and keep all the other digits the same. If the tens digit is a 9 then change the 9 to a 0 and increase the hundreds digit by 1.
Have a look at this video if you need to revise how to quickly add 10 to a 2-digit number.
Click on the following worksheet to get a printable pdf document.
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