### Home > CC1 > Chapter 1 > Lesson 1.2.3 > Problem 1-70

1-70.

How many pennies are represented by each expression below? Homework Help ✎

Remember to multiply first, then add.

23 pennies

This one is similar to the one above.

One student, Christy, did it this way:

(2)(3) = 6

6 + 5 = 11

11 + 4 = 15

15 × 2 = 30

What did Christy do wrong?Make sure you do what is inside the parentheses first.

19 pennies