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Nelson Education > School > Mathematics K-8 > Math Focus > Grade 2 > Teacher Centre > Surf for More Math > Chapter 8 - Lesson 9
 

Surf for More Math

CHAPTER 8: ADDITION AND SUBTRACTION

Lesson 9: Solving Missing-Part Problems

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


Solve problems that involve a missing addend, subtrahend, or minuend.
[CN, PS, R, V]

Instructions for Use

Addition Equations gives students practice solving problems that involve a missing number in an addition equation.


To use Addition Equation, scroll down to the Practice section and click Start. Enter the missing number in the addition equation 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.

Subtraction Equations gives students practice solving problems that involve a missing number in a subtraction equation.

To use Subtraction Equation, scroll down to the Practice section and click Start. Enter the missing number in the subtraction equation 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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