Lesson 8 - Subtracting in a Different Way

To encourage students to have fun on the Web while learning about Subtracting in a Different Way, here are some games and interactive activities they can do on their own or in pairs.

Goal

Use regrouping to make subtraction easier.

Builds Upon

Student Book pages 114-115

Instructions for Use

Subtracting Across Zeros prompts students to use regrouping to make subtraction easier.

To use Subtracting Across Zeros, answer the questions and check your answers by clicking the box.

Stamp Game provides students with practice solving subtraction problems using regrouping.

To use Stamp Game, click of the '-' sign. Start forming the first number by dragging the stamps onto the work area. Form the second number by dragging stamps from the first number below. To regroup, combine the stamps for each category into groups and exchange each group of TEN stamps for ONE of a higher category. When the second number is formed, drag a box around the second number and double click in the box to remove those stamps. The correct the answer is shown.

Click 'Clear' to start a new question and click 'X' to exit the program.

Large Bead Frame prompts students to practice solving subtraction problems using regrouping.

To use Large Bead Frame, click of the '-' sign. Start forming the first number by sliding the beads across the work area. Form the second number by sliding the beads back from the first set of beads. To regroup, combine the beads for each category into groups and exchange each group of TEN beads for ONE of a higher category. When the correct groupings are formed, the answer is shown.

Click 'Clear' to start a new question and click 'X' to exit the program.