# Surf for More Math

## CHAPTER 8: ADDITION AND SUBTRACTION

**Lesson 6: Subtracting One-Digit Numbers from Two-Digit Numbers **

Use these interactive activities to encourage students to have fun on the Web while learning about adding and subtracting two-digit numbers. Students can try these activities on their own or in pairs.

**Goal**

Use personal strategies to subtract a one-digit number from a two-digit number with manipulatives.

[C, CN, ME, PS, R]

**Instructions for Use**

**Subtracting** allows students practice with subtracting a one-digit number from a two-digit number.

To use Subtracting, enter the different of the numbers shown and click Submit. When you have answered the last question, click Submit & Finish to get a summary of your score.

**Subtraction Machine** allows students to practise subtracting 2 one-digit numbers, subtracting 1 two-digit number and 1 one-digit number, and subtracting 2 two-digit numbers.

To use Subtraction Machine, select Level 2 for subtracting 2 one-digit numbers, and 1 two-digit number and 1 one-digit number. Enter your answer in the white box and click the button “Check my answer.” Your score is shown to the right. Select the Level for each question.