Sample Number and Operations Lessons

Smart Tutor’s Number and Operations curriculum is designed to help students understand numbers, ways of representing numbers, relationships among numbers, number systems and operations and algebraic thinking. Interactive, audio-supported lessons help students master key skills including the ability to:

  • Understand place value structure of the base-10 number system
  • Compare, order and formulate equivalent representations of whole numbers, fractions, decimals and percent through the use of models and number lines
  • Develop understanding of fractions as part of a whole, part of a set and as division of whole numbers
  • Use interactive media and real-life situations to make reasonable estimates to solve problems
  • Gain number sense through an understanding of addition, subtraction, multiplication and division including their different meanings, effects, properties and the relationships to one another
  • Develop fluency with basic number combinations for addition, subtraction, multiplication and division
  • Develop and use strategies to estimate the result of whole number computations
  • Explore number theory by classifying numbers according to their factors and multiples


Number and Operations Sample Lessons




Explore addition and subtraction with Henrietta at the Hippo Hotel.

Tutorial  |  Practice  |  Assessment


First Grade


Practice adding a 2-digit number plus a 1-digit number with Reba Rabbit.

Tutorial  |  Practice  |  Assessment


Second Grade


Compose and Decompose numbers with Kirima and the penguins at the ice carnival.

Tutoria  |  Practice  |  Assessment


Third Grade


Explore fractions with Michiko at the kite factory.

Tutorial  |  Practice  |  Assessment


Fourth Grade


Help Omar check his receipts by solving addition and subtraction problems with decimals.

Tutorial  |  Practice 1Practice 2|   Assessment


Fifth Grade


Play the balloon game and convert mixed number into improper fractions and improper fractions into mixed numbers.

Tutorial  |  Practice 1Practice 2|   Assessment


Free Math Games