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Step 1: Check the “Show/hide intervals” box to calibrate the number line. This should assist you to locate a point more accurately. Do not check the “show/hide answer” box.
Step 2: Use the number line to answer the questions below. If a point is out of range, use the zoom in/out slider to bring the point in.
-11 + 7 = ?
-11 + 11 = ?
-11 + 17 = ?
-6 + 3 = ?
-4 + 0 = ?
-7 + -4 = ?
9 + 6 = ?
6 + 8 = ?
4 + -12 = ?
5 + -17 = ?