Question

Erica knits 18 squares on Monday. She knits 7 more squares each day for the rest  of the week. How many  squares does Erica have on Friday?

Answer 1

She knits 18 squares on Monday.
Then she knits 7 more squares each day:
Tuesday: +7, Wednesday: +7, Thursday: +7 and Friday: +7
18 + 7 * 4 = 18 + 28 = 46
Answer: She has 46 squares on Friday.