Your first grader will soar high above the skies as he completes addition problems with sums of 9 or less in this math worksheet.

Time for school! Have your first grader take a look at this school (school of fish, that is) and solve the addition problems.

Introduce your first grader to centimeters by helping her measure some familiar things: school supplies!

Soar above the clouds and practice adding and subtracting within 10 with this fun fluency worksheet!

Practice addition facts within 10 with this high-flying math crossword puzzle!

This cute all-in-one worksheet boosts your kid's addition skills and reading comprehension ability.

How high can you count? First graders will strengthen their understanding of ones and tens with this hundreds chart. Students will fill in the missing numbers up to 120 and then answer questions using the chart.

Introduce your child to beginning addition with this colorful first grade math worksheet offering addition problems with sums up to 9. Up, up, and away!

Hook your first- and second-grade students with a splash of math fun!

Boost your first grader's number sense with a lesson in place value up to the tens place.

Understanding place value is fundamental to developing and mastering number sense skills. Use this assessment activity to evaluate how your first graders are coming along in their understanding of place value using tens and ones.

Learners will tackle 12 subtraction problems within 20 in this football-themed math worksheet. 

Fall into some fun addition practice with this seasonal worksheet!

First graders explore two-digit numbers using place value models in this number sense worksheet!

You can measure length with all kinds of units, not just inches and centimeters!

In autumn, the leaves turn red, orange, and yellow—test your logic skills with a sudoku puzzle to match!