Surf for More Math
Lesson 1 - Adding and Subtracting Using Mental Math
Use these interactive activities to encourage your child to have fun on the Web while learning about adding and subtracting using mental math.
Use mental math strategies to add and subtract.
Student Book page 96
Instructions for Use
Adding and Subtracting Mentally lets your child practice using mental math strategies to add and subtract.
To use Adding and Subtracting Mentally, select a level of difficulty (green is easy, yellow is difficult, and red is the most difficult) beside either addition or subtraction. Click the "Begin!" button to load the first of ten questions. Enter the answer in the text box and press the "Enter" key. The tally on the screen shows your results.
Interactive Math Flashcards lets your child practice using mental math strategies to add and subtract.
To use Interactive Math Flashcards, select the operation (either addition or subtraction). Then select the minimum and maximum values for the first number in the questions (Operand 1) and for the second number in the questions (Operand 2). Click the "Press me to get started" button to load the first question. Input the answer in the text box and click the "Submit Answer" button. To change the operation or complexity of the problems, click the "Change" button. Feedback is provided for each answer.