IAB OA Grade 4

Story Problems

100

Ms Kelly has 3 times as many Francises than Ms. LaFlamme.  Ms. LaFlamme has 6 Francises.  How many Francises does Ms. Kelly have?

18 Francises

200

Your mom plants 9 times more carrots than my mom.  My mom plants 7 carrots.  How many carrots does your mom plant?

63 carrots

300

A restaurant has 4000 ketchup packets.  They want to put the same number of packets into 7 bins for storage.  They writ this equation: 4000 ➗ 7 = 571 R3.

Select the response that shows what R2 means in this equation.

A) The restaurant can put 2 packets into each bin.

B) The restaurant can store 571 more packets in 2 bins

C) The restaurant can store 3 packets in each bin, with 571 left over

D) The restaurant can store 571 packets in each bin with 3 packets left over.

D

400

A tree is 42 inches tall.  A flower is 6 inches tall.  How many times as tall as the flower is the tree?

7 times as tall.

500

Farfig Newton has 57 bleepos to give to 13 Bjorns.  Farfiig gives the bleepos out to each Bjorn 1 at a time until all of them are gone.  How many Bjorns will get 5 bleepos?

5 Bjorns

Factors

100

Which list has all the factors of 20?

A) 1,2,3,6,10,20

B) 1,2,4,6,10,20

C) 1,2,3,5,10,20

D) 1,2,4,5,10,20

D

1x20 = 20

2x10 = 20

4x5 = 20

200

Which list has all the factors of 24?

A) 1,2,3,4,5,6,7,8,24

B) 1,2,3,4,6,8,12,24

C) 1,2,3,4,6,12,24

D) 1,2,3,5,8,12,24

B

1x24 = 24,  2x12 = 24, 3x8 = 24, 4x6 = 24

300

List all the factors of 56.

1,2,4,7,8,14,28,56

400

Which list shows the factors of both 18 and 36?

A) 1,2,3,4,5

B) 1,2,3,6

C) 1,2,3,6,9,13,18,36

D) 1,3,6

D

18 = 1,2,3,6,9,18

36= 1,3,6,13,36

500

Which numbers are factors of both 12 and 42?

A) 1,2,3,6

B) 1,2,4,6

C) 1,3,4,7

D) 1,3,6,7

A

12 = 1,2,3,4,6,12

42 = 1,2,3,6,7,14,21,42

Multiples

100

Write the next five multiples of 2, starting at 16

16, 18, 20, 22, 24

200

Is 9 a multiple of 63?  How do you know?

yes!  6+3=9, so it is a multiple of 9

300

Is 8 a multiple of 19?  How do you know?

No.  8x2 = 16, 8x3=24

400

List the next 5 multiples of 7, starting at 49.

49, 56, 63, 70, 77

500

Is 83 a multiple of 7?  How do you know?

No, because 7x11=77, and 7x12=84.

Prime or Composite

100

A prime number has ____ factors, while composite numbers have _____ factors.

2/more than 2

200

Is 81 prime or composite?  How do you know?

Composite.  Factors = 1, 3, 9, 27, 81

300

Is 17 prime or composite?  How do you know?

Prime.  Factors = 1,17

400

Is 2 prime or composite?  How do you know?

Prime.  Factors = 1,2

500

Is 25 prime or composite?  How do you know?

Composite.  Factors = 1,5,25