Fractions

Rosey is working on a problem and has to calculate $\frac{1}{22}+\frac{15}{16}$122+1516. She says the answer is about $1$1. Let’s see if her estimate is reasonable.

a

Let’s look at $\frac{1}{22}$122. Which value below is the best estimate for $\frac{1}{22}$122?

$2$2

A

$\frac{1}{2}$12

B

$0$0

C

$1$1

D

$2$2

A

$\frac{1}{2}$12

B

$0$0

C

$1$1

D

b

Now let’s look at $\frac{15}{16}$1516. Which value below is the best estimate for $\frac{15}{16}$1516?

$\frac{1}{2}$12

A

$1$1

B

$2$2

C

$0$0

D

$\frac{1}{2}$12

A

$1$1

B

$2$2

C

$0$0

D

c

Rewrite the fraction sum using the rounded values. Do not add the values together.

d

Calculate the sum $0+1$0+1.

e

Is Rosey's estimate reasonable?

Yes

A

No

B

Yes

A

No

B

Easy

Approx a minute

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Use a range of additive and simple multiplicative strategies with whole numbers, fractions, decimals, and percentages.