Division Concepts

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Question 1: In math, can the size of each part be different than the other parts after a division?

• No

• Yes

Answer explanation

No. Division means that all the parts are the same size after a division.

Tags

CCSS.3.OA.A.2

In math, does a horizontal bar mean to divide?

• No

• Yes

Answer explanation

Yes. It's the same operation as the division symbol.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

A baker divides some dough into equal size parts by cutting it 2 times. Is the divisor 2?

• No

• Yes

Answer explanation

No. Two cuts make 3 parts. The divisor is the number of parts in the division, not the number of cuts. The divisor is 3.

Tags

CCSS.3.OA.A.2

Can the divisor be 0?

• No

• Yes

Answer explanation

No. This is undefined in math. Sometimes people jokingly say a divisor of 0 would be "illegal" in math.

Tags

CCSS.3.OA.D.9

Can the dividend be 0?

• No

• Yes

Answer explanation

Yes. An example is when all of the pieces of a cake have been eaten.

Tags

CCSS.3.OA.D.9

When braiding hair we divide a handful of hair into 3 strands. Is that procedure considered division in math?

• No

• Yes

Answer explanation

No. In math, we would keep only 1 strand when doing a division operation.

Tags

CCSS.3.OA.A.2

In math, do we keep only 1 part during a division operation?

• No

• Yes

Answer explanation

Yes. This is different than our everyday use, in which we say that we divide a sandwich in two but then we keep BOTH halves on our plate.

Tags

CCSS.3.OA.D.9

Is division considered the inverse operation of multiplication?

• No

• Yes

Answer explanation

Yes. They are opposites so can undo each other.

Tags

CCSS.3.OA.C.7