Theme 8.  Addition and subtraction of number 5

In the theme you learn:
• You will learn how to add and subtract 5 using a number line;
• You will practice solving expressions with adding and subtracting 5;
• You will improve your skills to solve problems about finding the sum and the difference and about increasing a number by a few units;
• You will learn to add and subtract "in a chain";
• You will practice comparing an expression and a number.