Celebrate Valentine's Day while reviewing subtraction math facts! Your little love-bug can practice memorizing these simple subtraction problems.

Celebrate Valentine's Day while reviewing math facts! Your little one can solve these addition problems, and soon he'll be able to memorizing them.

Children practice subtraction within 20 in this fall-themed math worksheet.

Children practice addition within 20 in this fall-themed math worksheet.

Children practice addition within 20 in this fall-themed math worksheet.

Children practice addition within 20 in this fall-themed math worksheet.

Collect all of these lucky clovers by solving each subtraction problem! Your little math whiz can practice memorizing his subtraction facts.

Prepare your first grader for Valentine's Day with these sweet math problems to help her review her subtraction math facts.

Prepare your first grader for Valentine's Day with these sweet math problems to help her review her addition math facts.

Put a little love into math practice with these sweet Valentine's Day addition problems, where your first grader can review his math facts.

Build basic math skills with this practice sheet, full of one-digit addition equations for your child to practice and start memorizing.

Build basic math skills with this practice sheet, full of simple subtraction equations for your child to practice and start memorizing.

Little math learners can have a blast solving these Valentine's Day addition problems! Build basic math skills with this practice sheet.

Children practice addition within 20 in this fall-themed math worksheet.

Little love-bugs can have a blast solving these Valentine's Day subtraction problems! Build basic math skills with this practice sheet.