Nelson EducationSchoolMathematics 3  
Surf for More MathLesson 5 – Estimating Differences
To encourage your child 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 your child estimate the difference of 2 numbers. To use Estimating Differences, click the ‘Start Subtraction’ button and read the equation in the text field. Have your child click the button to indicate if the answer is correct. Estimating Differences using Really Big Numbers lets your child 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 your child click the button to indicate if the answer is correct. 

