
Nelson EducationSchoolMathematics 3  
Surf for More MathLesson 5 – Estimating Differences
To encourage students to have fun on the Web while learning about Estimating Differences, here are some games and interactive activities they can do on their own or in pairs. Goal
Builds Upon Instructions for UseEstimating Differences lets students estimate the difference of 2 numbers. To use Estimating Differences, click the ‘Start Subtraction’ button and read the equation in the text field. Have students click the button to indicate if the answer is correct. Estimating Differences using Really Bug Numbers lets students estimate the difference of two large numbers. To use Estimating Differences using Really Big Numbers, click the ‘Start Subtraction’ button and read the equation in the text fields. Have students click the button to indicate if the answer is correct. 

