Estimating Products

The product means to...

• Estimate

• Multiply

• Add

• Subtract

Tags

CCSS.3.OA.A.1

Estimate means to...

• Multiply

• Add

• Subtract

• Round

Tags

CCSS.4.NBT.B.5

Why do we estimate numbers?

• We estimate because our teachers say so.

• We estimate because it makes math more difficult.

• Estimating makes math easier to solve.

When estimating products, you round to...

• The smallest place value

• The biggest place value

George's school was collecting cans for recycling. They had 81 bags with 5 cans inside each bag. About how many cans did they collect? Choose the expression that shows how to estimate for this problem.

• 81 x 5

• 90 x 5

• 80 x 5

• 70 x 5

Tags

CCSS.4.NBT.B.5

If plane tickets cost $560 each, estimate how much would 4 plane tickets cost? Choose the expression that shows how to estimate for this problem.

• 560 x 4

• 600 x 4

• 500 x 4

• 400 x 4

Tags

CCSS.4.NBT.B.5

Sam was buying extra pencils. He bought 27 packs with each pack having 8 pencils in it. How many pencils did he buy in all? Choose the expression that shows how to estimate for this problem.

• 27 x 10

• 30 x 8

• 20 x 8

• 25 x 8

Tags

CCSS.4.NBT.B.5

Solve: Will was drawing on scrap paper. He could fit 16 drawings on each page. If he has 6 pieces of paper, about how many drawings can he make in all?

• 120 drawings

• 22 drawings

• 96 drawings

• 60 drawings

Tags

CCSS.3.OA.A.1

CCSS.3.OA.A.3

CCSS.3.OA.C.7

CCSS.3.OA.D.8

Solve: A teacher had 34 students in her class. If each student completed 9 math problems, about how many problems would she have to grade altogether?

• 270 problems

• 306 problems

• 43 problems

• 360 problems

Tags

CCSS.3.OA.A.1

CCSS.3.OA.A.3

CCSS.3.OA.C.7

CCSS.3.OA.D.8

Tickets to the basketball game were $48 each. Mrs. Jones wanted to buy 4 tickets. Estimate the total price of the 4 tickets. (Make sure to use a dollar sign)

(a)