SALTA 4th grade

4.OA.4

Identify each number as prime or composite. Then list all of its factors.

Students were asked to arrange their class store items in rectangular arrays. What arrangements could each person use for the items? Identify as many as possible?

3

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Fran – 30 items Clark – 27 items Rod – 31 items Sammy – 13 items Who could arrange their items in equal rows? Who couldn’t arrange their items in equal rows? Why not?

6

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15

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Who has the greatest number of arrangements? Draw pictures to justify your answers. (DOK 3)

24

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Beth and Stephen had 72 cookies to place in bags for a bake sale. Each bag needed an equal number of cookies.

29

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What are four different ways they could bag the cookies so that: • Each bag has the same number of cookies • There are no leftover cookies • There are more than 2 and fewer than 10 cookies in each bag. Draw a picture and write an equation for each solution. Which solution will give them the greatest number of bags? (DOK 3)

What is the greatest multiple of 7 that is less than 60?

(DOK 1)

4.NBT.5

Use a variety of strategies to multiply the following numbers: 6 X 7 7 X 89 8 X 123 9 X 7654 23 X 24

Use mental math to decide if the product of 29 x 34 over or under 900? Draw a picture to explain your thinking.

(DOK 3)

(DOK 1)