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With answer key
Interactive
  • Grade 2
  • 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!
Download (PDF) Complete online
Assign to the classroom
Open the Safe Worksheet
Worksheet