Multiplication and Division

Concepts

  • Estimate and multiply whole number by a 2-digit number.
  • Estimate and divide whole number by a 1 and 2-digit number.
  • Understand multiples and factors
  • Use factors and multiples for test of divisibility
  • Estimate and multiply decimal number by 1 and 2-digit numbers
  • Estimate and divide decimal number by 1 and 2-digit numbers

Theory

  • Always estimate by rounding numbers. Then check the final answer. If you’re off by a 10, or 100, you know you made a silly mistake somewhere.

Common Misconceptions

  • Multiplying by a two digit number -> check how the tens digit is handled.
  • When dividing -> check how to continue if a remainder is present (by adding a decimal point).
  • When dividing -> check how two digit numbers are handled.

Practice Quizzes