DECIMAL JEOPARDY!

Rounding

100

Round 0.088 to the hundredths place.

What is 0.09?

200

Round 0.837 to the tenths place.

What is 0.8?

300

ESTIMATE 2.04 + 6.63

What is 9?

400

At the craft store, a canvas is $14.23, paint is $2.89, and a paint brush is $1.99. Estimate how much money I'll need to the nearest dollar. 

$19

500

Gas is currently being sold at $1.9296L. How much would 10L litres cost?

Hint, round to the nearest hundredth to know how much money you would spend. 

$19.30

Addition

100

0.96 + 0.34

 1.30?

200

72.8 + 3.21

76.01

300

3.2 + 0.95+ 13

17.15

400

I am baking! The cookies need 3.4g of sugar, the muffins need 1.23g of sugar, and the bread needs 10.025g of sugar. How many grams of sugar do I need?

14.655g

500

I am at the movies with 5 of my friends. Popcorn costs $5.35, pop costs $2.65, and a bag of candy costs $3.45. A bag of popcorn can be shared between two people, and a bag of candy can be shared between three people. Everyone will get their own pop. How much would everything cost? 

Popcorn - 3 x $5.35 = $16.05

Candy - 2 x $3.45 = $6.90

Pop - 6 x $2.65 = $15.90

$15.90 + $6.90 + $16.05 = $38.85

Answer is $38.85

Subtraction

100

15 - 3.21

 11.79

200

58 - 9.09

48.91

300

4.3 - 1.2 -0.25

2.85

400

My total at the grocery store came to $85.54. If I paid with a hundred dollar bill, how much change should I expect? 

$14.46

500

I was driving with a fish tank with no lid in the passenger seat. The fish tank started off with 30.78 litres. I went over 6 speedbumps and lost water each time. When I got to my destination, the fish take had 22.89 litres. What was the average amount of water I lost each bump? 

1.315L 

Multiplication

100

7.82 x 48

375.36

200

583 x 3.42

1993.86

300

8.4 x 7.8

65.52

400

My friends and I are going to the movies. Tickets cost $11.75 each. How much would it cost for me and 5 of my friends?

*hint: put in proper money form. 

$70.50 

500

Our pool needs 30.6mg for every 9L. How many mg of chlorine would I need if the pool can hold 975L of water? 

One litre of water needs (30.6mg/9L) of chlorine.

One litre of water needs 3.4mg of chlorine. 

3.4 x 975L  

=3315L 

Division

100

42.87 / 3

14.29

200

185.5 / 0.5

371

300

34.68 / 1.2 

28.9

400

In Science, Ms. Olson had 60.3 grams of metamorphic rock. She has to divide the rocks into 9 different containers for her class. If the rocks are equally divided by weight, how many grams of rock would be in each container? 

6.7grams

500

Grandma is babysitting 4 of her grandkids. She has enough candy to give each grandchild 15 pieces. But then she gets a phone call saying that 2 of her grandkids are bringing a friend. How many pieces of candy would each of the children receive so that everyone gets the same amount?

15 x 4 = 60 total pieces of candy. 

60/6 = 10 pieces of candy.