Number Line Frog Hop (Addition and Subtraction)

Live a frog's life as you hop along a number line in search of flies. Learn how addition and subtraction can be represented as movement along a number line. Fred the frog may even help you get better at adding and subtracting two-digit numbers in your head by decomposing them into tens and ones.

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  • Add numbers using a number line.
  • Subtract numbers using a number line.
  • Decompose a two-digit number into tens and ones.
  • Mentally add/subtract by first adding/subtracting the tens and then the ones.
  • add, difference, equation, subtract, sum