Arithmetic skills development Normal Addition & Subtraction Worksheets for Ages 5-8

Check out this FREE Trial Lesson on Addition & Subtraction for age 5-8!

Figure out the Unknown Number

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With answer key
Interactive
  • 5-8
  • Arithmetic skills development
  • Addition & Subtraction
  • Normal
The Unknown Number with the Moon Phases Worksheet
The Unknown Number with the Moon Phases Worksheet

The Unknown Number with the Moon Phases Worksheet

Show your kids the moon one night! Explain why its shape changes during the month with a worksheet. Then, help them to solve math equations and trace the answer, where the missing number is '8'.
The Unknown Number with the Moon Phases Worksheet
Worksheet