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Nelson Education > School > Mathematics K-8 > Math Focus > Grade 2 > Teacher Centre > Surf for More Math > Chapter 8 - Lesson 1
 

Surf for More Math

CHAPTER 8: ADDITION AND SUBTRACTION

Lesson 1: Adding and Subtracting Tens

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 for adding and subtracting tens with manipulatives.
[CN, ME, PS, R]

Instructions for Use

Adding Tens provides student practice with adding tens using a strategy.


To use Adding Tens, scroll down to the Practice section and click Start. Enter the sum of the two tens shown and click Check. A total of the number of correct and incorrect responses is shown. Click Report Totals to get a summary.


Scroll down to the Play section and select Countdown, Give Me Time, or 20 Questions. Click Start to begin answering the questions as in the Practice.

Subtracting Tens provides student practice with subtracting tens using a strategy.


To use Subtracting Tens, scroll down to the Practice section and click Start. Enter the difference of the two tens shown and click Check. A total of the number of correct and incorrect responses is shown. Click Report Totals to get a summary.


Scroll down to the Play section and select Countdown, Give Me Time, or 20 Questions. Click Start to begin answering the questions as in the Practice.

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