Check out this FREE "Basic addition practice" Trial Lesson for age 8-9!

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With answer key
Interactive
  • 8-9
  • With answer key
  • Basic addition practice
Open the Safe Worksheet
Open the Safe Worksheet

Open the Safe Worksheet

Send your child on a secret mission! Help them open the safe by giving them the code numbers to convert into standard form (e.g. 700 + 50 + 2 = 752). Get them to circle the correct answer for each safe and see all that math knowledge pay off!
Open the Safe Worksheet
Worksheet