Kym used the integer tiles to find the sum of (–3) + 6. The line showed that the answer is negative 3. Which of the following does Kym need to do to get the correct answer?
David added 2 and –3 using the number line tool. Which of the following errors did he make?
Mateo begins his dive at sea level. He dives down 15 meters, and then rises up 4 meters. He dives again, going down 7 meters. Which equation models Mateo’s movements, and uses the commutative property?
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