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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)

CCSS.Math: 1.OA.D.8
Google Classroom

Problem

Complete the equation.
17, minus, \bigstar, equals, 5
\bigstar, equals
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, start text, p, i, end text or 2, slash, 3, space, start text, p, i, end text
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