6.8 Integers Backwards
7 Math Nelson
Chapter 6
Purchase this Material for $8
You need to sign up or log in to purchase.
Subscribe for All Access
You need to sign up or log in to purchase.
Solutions 12 Videos

Try Meagan's trick using other numbers. Is there a quick way to find the original number? Explain how it works.

Buy to View

Use Meagan’s trick. Write the steps, in order, to find the original number.

  • Subtract 7.
  • Add -9.
  • Find the opposite.
  • Subtract from 12.
  • The answer is +10.
Buy to View

Find the original number. State the steps, in order. that you will use.

  • Add -31.
  • Subtract -9.
  • Add 18.
  • Subtract from 12.
  • The answer is - 12.
Buy to View

Make up a number trick that gives you the original number if you subtract 3 from the result. Your trick must have at least 4 steps.

Buy to View

Make up a number trick that always ends with the original number. Your trick must have at least three steps. One step must involve using an opposite.

Buy to View

Lloyd is lifting weights over a nine week training period. Every week. he lifts 2 kg more than he lifted the previous week. During the ninth week, he lifts 80 kg. How much was he lifting during his first week?

Buy to View

On Monday, Heidi bought some grapes. Each day, she ate half of them. On Friday, only eight grapes were left. How many grapes did Heidi buy?

Buy to View

During a clothing sale, the price goes down by half each day an item is not sold. If an item costs $2.50 after 8 days, what was the original price?

Buy to View

Romona takes a shape and cuts away half of it five times. The following triangle is what remains.

a) Draw the original shape.

b) Draw a polygon that is symmetric. With a single line, divide it into two identical pieces.

Buy to View

Make up a problem you can solve by working backwards. Show how to solve it.

Buy to View

Consider the following diagram. Find a way to move the discs from the first post. as shown, to the third post.

  • The discs on the third post must increase in size from top to bottom.
  • You cannot place a larger disc on top of a smaller disc.
  • You can use all three posts.
Buy to View