What is a number line? A number line is a straight line with numbers written in order from lowest to highest. Number lines can go up to any number, such as 10, 20, or even more! They help you to see ...
To add -4 and 5, draw the starting number on a number line and count to the right when adding positive numbers. What is the difference in temperature between a desert at 40 °C and a mountain top at -2 ...
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