Bagels costs. 95 cents, Leticia wants to but 12 bagels. She uses partial products to find her total. She says "$16.80 is close to my estimate of 12$1 = $12, so this total is reasonable" Do you agree with her? Explain your reasoning

12 bagels,.95 each

10 0.5 = 5

10 * 0.9 = 9

2 * 0.5 = 1

2 * 0.9 = 1.8

$5 + $9 + $1 + $1.80 = $16.80

Question

Mathematics

Charlize

18 October, 13:31

Bagels costs. 95 cents, Leticia wants to but 12 bagels. She uses partial products to find her total. She says "$16.80 is close to my estimate of 12$1 = $12, so this total is reasonable" Do you agree with her? Explain your reasoning

12 bagels,.95 each

10 0.5 = 5

10 * 0.9 = 9

2 * 0.5 = 1

2 * 0.9 = 1.8

$5 + $9 + $1 + $1.80 = $16.80

+2

Answers (1)

Know the Answer?

Jasiah Watts · Answer 1

No. Her reasoning was

10 * 0.5 = 5

10 * 0.9 = 9

2 * 0.5 = 1

2 * 0.9 = 1.8

but it should have been

10 * 0.05 = 0.5

10 * 0.9 = 9

2 * 0.05 = 0.1

2 * 0.9 = 1.8

to end up with $11.40

The 0.5 is in the wrong decimal place, it should be 0.05