Multi-step problems with positive and negative numbers

Question 1

The temperature was 5 °C and fell steadily to −4 °C over 6 hours. What was the change in temperature per hour? (Give a negative number.)

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Question 2

Sofia's game-credit balance is −18. Sofia adds 20 credits, then buys 4 power-ups at 1 credits each. What is the balance now?

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Question 3

A diver is at −6 m. She descends 0.75 m every second for 4 seconds. What is her new depth, in m? (Give a negative number.)

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Question 4

The temperature was 12 °C and fell steadily to 10.5 °C over 3 hours. What was the change in temperature per hour? (Give a negative number.)

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Question 5

Nia's game-credit balance is −7. Nia adds 16 credits, then buys 7 power-ups at 1.5 credits each. What is the balance now?

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Question 6

A diver is at −9 m. She descends 2 m every second for 4 seconds. What is her new depth, in m? (Give a negative number.)

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Question 7

The temperature was 12 °C and fell steadily to 6 °C over 4 hours. What was the change in temperature per hour? (Give a negative number.)

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Question 8

Mei's game-credit balance is −12. Mei adds 13 credits, then buys 4 power-ups at 1.5 credits each. What is the balance now?

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Question 9

A diver is at −7 m. She descends 0.5 m every second for 12 seconds. What is her new depth, in m? (Give a negative number.)

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Question 10

The temperature was 6 °C and fell steadily to 1.5 °C over 3 hours. What was the change in temperature per hour? (Give a negative number.)

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Question 11

Kwame's game-credit balance is −16. Kwame adds 25 credits, then buys 9 power-ups at 2.75 credits each. What is the balance now?

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Question 12

A diver is at −1 m. She descends 2 m every second for 4 seconds. What is her new depth, in m? (Give a negative number.)

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Question 13

The temperature was 6 °C and fell steadily to −11.5 °C over 7 hours. What was the change in temperature per hour? (Give a negative number.)

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Question 14

Priya's game-credit balance is −6. Priya adds 26 credits, then buys 4 power-ups at 1 credits each. What is the balance now?

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Question 15

A diver is at −4 m. She descends 0.75 m every second for 4 seconds. What is her new depth, in m? (Give a negative number.)

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Question 16

The temperature was 8 °C and fell steadily to 5 °C over 6 hours. What was the change in temperature per hour? (Give a negative number.)

Answer