JI Matching Questions
NOTE: Some of these questions are more for junior and others more for intermediate.
- Represent in a lot of different ways. Which of those ways help you see that is the same as 80%? Which don’t?
- Evan and Leo have the same number of computer games. Evan has organized his into 20 equal piles. Leo has also organized his into piles, but he has 5 piles. Do you know anything, for sure, about Leo’s piles? Explain.
- Ian created a scale drawing of a house. The house is really 7 m high; it is only 30 cm high on the scale drawing. If the house is really 13 m wide, can you be sure how wide it would be on the scale drawing? Explain.
- How is determining of 12 like determining of 27? How is it different?
- Why does it make sense that 2 ÷ = 2 x 3?
- You know that a fraction is greater than but less than . What else do you know about it?
- How does what you know about subtraction tell you why – is greater than without calculating the answer?
- You know that a relationship is created by doubling values and then adding 5 (e.g. 11 becomes 22 + 5 = 27). What other relationship would have virtually the same effect if the original numbers are really big?
- Jessica said that since is less than and is more. But how did she know that?
- You want to figure out how many 8s are in 120. What are some different ways you could do that?
- One fraction has a numerator and denominator that are 3 apart. Another has a numerator and denominator that are 10 apart. Do you know which one is greater or not? Justify.
- A number is just a tiny bit less than halfway between 1 and 2. What could it be?
Math Camppp 2010