Teacher-Led Station

CRM 1.1 - Lesson 1

The school store sells pencils for $0.30 each, hats for $14.50 each, and binders for $3.20 each. Elena

would like to buy 3 pencils, a hat, and 2 binders. She estimated that the cost will be less than $20.

Do you agree with her estimate? Explain your reasoning.

Estimate the number of pencils could she buy with $5. Explain or show your reasoning.

Question

Mathematics

Izabelle Macdonald

22 October, 17:41

Teacher-Led Station

CRM 1.1 - Lesson 1

The school store sells pencils for $0.30 each, hats for $14.50 each, and binders for $3.20 each. Elena

would like to buy 3 pencils, a hat, and 2 binders. She estimated that the cost will be less than $20.

Do you agree with her estimate? Explain your reasoning.

Estimate the number of pencils could she buy with $5. Explain or show your reasoning.

+1

Answers (2)

Know the Answer?

Shaun Navarro · Answer 1

no n 16

Step-by-step explanation:

cost for 3 pencils, a hat, and 2 binders

= 3*0.3+14.5+2*3.2

= $21.8 > $20

so estimate not good

5/0.3=16.6 ...

so she can buy 16 pencils

Trigger · Answer 2

Step-by-step explanation:

Yes, her estimate is not good because one hat is $14.50 and 2 binders are$3.20*2=^$6.40. Those two items combined is over $20. The pencils will put the total further over $20.

Pencils are $0.30 each. So 10 pencils will cost $3.

$5 - $3 = $2

The remaining $2 is enough for 6 more pencils.

So she could buy 10+6 = 16 pencils with $5.