Problem-Solving Strategies (Ex. 1)

What's in this exercise

Answers are hidden — sign up to practise and check your work.

1. Question 1

   Multiple choice

   You need to add 3,456 + 2,999. Which strategy is most efficient?

2. Question 2

   Multiple choice

   You need to find 8 × 25. Which mental strategy is best?

3. Question 3

   Multiple choice

   You estimate 47 × 6 ≈ 50 × 6 = 300. The actual answer should be ___.

4. Question 4

   Sequence

   Multiples of 25: 25, 50, 75, ___.

5. Question 5

   True or false

   Rounding numbers before calculating gives an estimate, not the exact answer.

More exercises in this module

• Drawing Bar Charts (Ex. 3)

• Interpreting Time Graphs (Ex. 1)

• Choosing an Efficient Strategy (Ex. 2)

• Explaining How an Answer Was Found (Ex. 2)

• Problem-Solving Strategies (Ex. 3)

• Problem-Solving Strategies (Ex. 2)