Question

Erica knits 18 squares on monday. She knits 7 more squares each day from tuseday to thursday. How many squares did Erica knit in all by the end of the day on thursday

Answer 1

39

Explanation:

Erica knits 18 squares on Monday. She knits Tuesday through Thursday which is 3 days. She knits 7 squares each day making it 21 total squares these days. For the whole week, she has knitted 18 + 21 = 39.