CPM Homework Help : ACC6 Problem 4-35

CPM Homework Banner

Home > ACC6 > Chapter 4 Unit 4 > Lesson CC1: 4.1.3 > Problem 4-35

4-35.

Estimate each sum or difference below by stating which whole numbers the answer should be between. Then check your conclusion by calculating the actual sum or difference.

$5.2-2.09$

Hint (a):
About how big should their difference be? Estimate by first subtracting $2$ from $5$ and then subtracting $2$ from $6$ .
Answer (a):
$\begin{array}{r} \quad 5.20 \\ -2.09 \\ \hline {3.11} \end{array}$

$25\frac{1}{3}-17\frac{5}{6}$

Hint (b):
To estimate the difference, try rounding the first term to $25$ and the second term to $18$ .

$3 \frac { 3 } { 4 } + 2 \frac { 5 } { 7 }$

Hint (c):
To calculate the sum, you may want to convert these mixed numbers into fractions greater than one before adding.
Partial Answer (c):
The answer should be between $6$ and $7$ .
How can you tell?

$103.57 + 29.6$

- Hint (d):
- Since each of these have a portion just over one-half, try rounding one up to the nearest whole number and rounding the other one down.

© 2022 CPM Educational Program. All rights reserved.