138k views
5 votes
Which strategy best explains how to solve this problem?

Artie was saving pennies. On the first day, he saved 2 pennies. The next day, he saved twice as many as he did the first day, giving him a total of 6 pennies (2 + 4). He continued doubling the number of pennies he saved each day for 10 days.

How many pennies did Artie have all together at the end of 10 days?

A.
Translate into a number sentence.
10 × (2 + 4) = b
First add up the pennies in the first and second day. Then you need to multiply by the total number of days.

B.
Make a table.

Day Pennies saved that day Running total
1 2 2
2 4 6
3 8 14

C.
Draw a diagram.
Draw 2 pennies and label them Day 1. Draw 4 pennies and label them Day 2. Draw 8 pennies and label them Day 3. Continue this for the 10 days and then count all the pennies on Day 10.

please need help

User NKSM
by
6.6k points

2 Answers

4 votes
The answer is 1024 so it would be C
User Vinayak Phal
by
7.1k points
4 votes
the answer is 1024 so it would be C
User Darrielle
by
7.3k points