Pattern for add 11 subtract 6

I have 140 markers. how many boxes of 10 markers does I need to get 180 markers

What is the answer for - 1.2 (-3.05)

Of 1000 applicants for a mountain-climbing trip in the Himalayas, 450 get altitude sickness, 622 are not in good enough shape, and 30 have allergies.

How many boxes of pens will you need if each box contains 24 pens and you need 266?

The product of the slopes of two non-vertical perpendicular lines is always - 1. It is NOT possible for two perpendicular lines to both have a positive slope because the product of two positives is positive.

Reader's workshop starts at 10:35am and ends at 11:28am. how many minutes is readers workshop?

The proportion W = 100 can be used to find the whole, w. Use the language of percent to explain whether w is less than or greater than 75.

How many times can you make $0.75 with nickels, dimes, and quarters?

What is - 9 - (-9) + -9 times 3

How much is 81% of 403? find the missing element in the following base-rate-percentage problem. round the answer to the nearest hundredth.