By the Numbers (KJ11-23)

Story Problems

100

Half of the school's students went to the game.  The school has 244 students.  How many went to the game?

122

200

1/4 of the 5th graders aced the test.  There are 20 fifth graders.  How many aced the test?

5

300

John is half the age of his mother.  John is 22.  How old is his mother?

44

400

Jake's test average was a 75 after three tests.  He got one 75 and one 76.  What was his third score?

74

500

Seven people chose red.  Seven people chose blue.  Fourteen people chose green.  What percent of people chose blue?

25%

Multiplation with decimals

100

0.35 * 4

1.4

200

3.5 * 6

21

300

1.3 * 5.2

6.76

400

7.1 * 2.3

16.33

500

0.45 * 6.1

2.745

What's bigger?

100

1/3 or 1/4

1/3

200

Lake Superior or the Atlantic Ocean

The Atlantic Ocean

300

7/8 or 3/4

7/8

400

The perimeter of a rectangle with a length of 9 and a width of 2, or a rectangle with a length of 5 and a width of 6.

They are equal.  The perimeter for both is 22.

500

The population of Florida or the population of Texas?

Texas.  The population of Texas is around 30 million, while the population of Florida is about 22 million.

Is it divisible?

100

Is 102 divisible by 2?

Yes, 102 is an even number.

200

Is 102 divisible by 3?

Yes, 102 divided by 3 is 34.  But we know 102 is divisible by three because when we add the digits of the number we get 3 and 3 is divisible by 3.

300

Is 102 divisible by 6?

Yes, 102 divided by 6 is 17.  But we know 102 is divisible by 6 because in the questions above we saw that 102 is divisible by both 2 and 3.

400

Is 1003 divisible by 5?

No.  It cannot be because it doesn't end in 5 or 0.

500

Is 918 divisible by 9?

Yes, because when we add the digits 9 +1 + 8 we get 18 and 18 is divisible by 9.  We can divide and confirm that 918 divided by 9 = 102

Grab Bag

100

What is 1/2 + 1/2

1

200

What is 7/8 - 2/8

5/8

300

Sometimes people say they gave "110%" to some task.  What fraction is that?

110/100

1 and 10/100

1 and 1/10

All of these are correct answers.

400

Publix has two different sales on Ritz crackers.  One week the sale is buy one box, get the second box free.  The next week the sale on Ritz crackers is 50% off.  Which is the better deal?

They are the same deal if you end up wanting two. boxes.  The 50% off is a better deal if you only want to buy one box.

500

2/5 of the students like Chipotle, 3/5 prefer Chick-Fil-A.  There are 30 students.  How many like each restaurant?

12 like Chipotle

18 like Chick-Fil-A