Name: ____________________ Date: _____________________

1. Subject: Math Assignment: Choice Board Name: ____________________ Date: _____________________ Due Friday, September 13 Directions: Complete 3 assignments in a row. Staple all papers together. Make up a word problem you can solve by finding common factors. Then make up a different word problem you can solve by finding common multiples. Solve your problems, and explain how you know your answers are correct. Create a math rap or rhyme that will help someone understand when to use LCM. (extra points if you’re willing to perform it in class!) Worksheet 1 Find the LCM for each pair: 8 and 12 3 and 15 7 and 11 9 and 10 Find the GCF for each pair: 5) 18 and 30 6) 9 and 25 7) 23 and 29 8) 142 and 148 Define 5 key vocabulary word or terms from this unit. Then use each word in a sentence that shows you know the definition of the word. Worksheet 2 Worksheet 2 Write a letter to a younger student explaining the difference between LCM and GCF. Worksheet 1

2. Worksheet 1: Write whether you would use GCF or LCM to solve each problem. Then solve the problem. One radio station broadcasts a weather forecast every 18 minutes and another station broadcasts every 15 minutes. If the stations broadcast both a weather forecast and a commercial at 12:00, when is the next time both will broadcast at the same time? 2) Cameron is making bead necklaces. He has 90 green beads and 108 blue beads. What is the greatest number of identical necklaces he can make if he wants to use all the beads? Worksheet 2: A restaurant’s two neon signs are turned on at the same time. Both signs blink as they are turned on. One sign blinks every 9 seconds. The other sign blinks every 15 seconds. In how many seconds will they blink together again? 2) Neena has 54 smiley-face stickers, 36 glittery stickers and 81 heart stickers. She wants to divide the stickers evenly among her friends. Find the greatest number that Neena can use to divide the stickers evenly. 3 b) 9 c) 18 d) 27 3) The cast of a play had a party at the drama teacher’s house. There were 20 cookies and 40 carrot sticks served as refreshments. Each cast member had the same number of whole cookies and the same number of whole carrot sticks. Nothing was left over. The drama teacher did not eat. How many cast members could have been at the party? Explain.