Surf for More Math

Lesson 1 - Adding and Subtracting Using Mental Math

Use these interactive activities to encourage students to have fun on the Web while learning about adding and subtracting using mental math. Students can try these activities on their own or in pairs.

Goal

Use mental math strategies to add and subtract.

Builds Upon

Student Book page 96

Instructions for Use

Adding and Subtracting Mentally lets students 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 students 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.