Ken's predicted temperature for April is 7°C. His prediction for May is 2°C higher than April. He used the number line to solve the problem, starting at 0, moving right to 7, and then moving 2 units to the left. Explain Ken's error. 1-2 sentences
Ken's error is that he should have moved 2 units to the right from 7, not to the left.
Ken predicts that the average temperature will be -5°C in December. If he predicts the temperature will rise 6°C in January and fall 3°C in February, which of the following equations can he use to find the sum of the temperatures for those months? Check all that apply.
[6 + 3] + 5 = 14
(- 5) + [3 + 6] = - 4
[(- 5) + (- 3)] + 6 = - 2
5 + [(- 6) + (- 3)] = - 4
[6 + (- 5)] + (- 3) = - 2
[(- 5) + 6] + (- 3) = 4
Ken can use the following equations to find the sum of the temperatures for those months:
[6 + 3] + 5 = 14
(- 5) + [3 + 6] = - 4
[(- 5) + (- 3)] + 6 = - 2
5 + [(- 6) + (- 3)] = - 4
Ken predicts that the average temperature will be -5°C in December. If he predicts the temperature will rise 6°C in January and fall 3°C in February, which of the following equations can he use to find the sum of the temperatures for those months? Check all that apply.
A. [6 + 3] + 5 = 14
B. (- 5) + [3 + 6] = - 4
C. [(- 5) + (- 3)] + 6 = - 2
D. 5 + [(- 6) + (- 3)] = - 4
E. [6 + (- 5)] + (- 3) = - 2
F. [(- 5) + 6] + (- 3) = 4
Ken can use the following equations to find the sum of the temperatures for those months:
B. (- 5) + [3 + 6] = - 4
C. [(- 5) + (- 3)] + 6 = - 2
F. [(- 5) + 6] + (- 3) = 4