Multiple: counting by a number

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Presentation transcript:

Multiple: counting by a number Least Common Multiple: Less than 12, LISTING Method LCM of 4 & 6 LCM of 12 & 8

LCM Ladder Method For numbers greater than 12 LCM of 18 & 24 LCM of 36 & 45

U-TRY LCM 10 & 12 28 & 42

Examples: LCM 6 & 7 6 & 18 9 & 10 5 & 20

Two faucets are dripping Two faucets are dripping. One faucet drips  every four seconds and the other faucet drips  every nine seconds. If a drop of water falls  from both faucets at the same time, how many  seconds will it be before you see the faucets  drip at the same time again?

On October 2nd, Sydney and Lisa are walking together On October 2nd, Sydney and Lisa are  walking together. Sydney walks every 6 days and Lisa walks every 8  days. On what date will they walk on the  same day again?

Find the LCM: 1. 6 & 9 2. 48 & 36 3. 3 & 5 4. 9 & 54 5. 12 & 13 6. John and Corey are cutting their grass today. John cuts his grass every 8 days, Corey cuts his every 12 days. In how many days will they be cutting grass on the same day?