Common Core 1.NBT.5
Given a two-digit number, mentally find 10 more or 10 less.
What 1.NBT.5 covers
Given a two-digit number, mentally find 10 more or 10 less. This Common Core standard sits in the Number & Operations in Base Ten domain for 1st Grade. Below is 1 free, printable worksheet that give kids targeted practice on this exact skill, each with a free answer key.
How to use these worksheets
Print a set for homework or classroom practice. Each worksheet comes in multiple versions, so children can repeat the same skill with fresh questions until it sticks.