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1st grade

Course: 1st grade > Unit 2

Lesson 5: Missing number within 20
Math
1st grade
Addition and subtraction
Missing number within 20
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Find missing number (add and subtract within 20)

Google Classroom

Problem

Complete the equation.
17−★=5
★=
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi
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