Operations with Integers Class 7 Short Question Answer

Operations with Integers Class 7 Short Question Answer

Operations with Integers Class 7 Short Question Answer

Question 1.

You are at an elevation 380 m above sea level as you start a motor ride. During the ride, your elevation changes by the following metres: 540 m, -268 m, 116 m, -152 m, 490 m, -844 m, 94 m. What is your elevation relative to the sea level at the end of the ride?

Solution:

356 m

Evaluate the following, using distributive property.

Question 2.

- 39 × 99

Solution:

-3861

Question 3.

(-85) × 43 + 43 × (-15)

Solution:

-4300

Question 4.

53 × (-9) - (-109) × 53

Solution:

5300

Question 5.

68 × (-17) + (-68) × 3

Solution:

-1360