Starter Un jumble these letters to make our
Starter Un jumble these letters to make our key words! westol cnoomm spillumt M
BAT write a number as a product of primes BAT Find the LCM of two numbers
LCM 1 Daniel is going to put all his marbles into groups of size 20 or 12 only What is the smallest number of marbles that Daniel could have if he has more than 12 marbles?
LCM 2 Two lighthouses can be seen from the top of a hill. The first flashes once every 36 seconds, and the other flashes once every 54 seconds. If they flash at the same time, how long will it be until they flash at the same time again?
LCM 3 Westcliff primary is going to put all its students next year into classes of size 16 or 22 only (not both) What is the smallest number of students over 22 that could be on next years roll at Westcliff?
LCM 4 The school bell sounds every 90 minutes. The school buzzer sounds every 150 minutes Both bell and buzzer sound at 9: 00 am What is the next time at which both will sound together?
LCM 5 Tom, Sam and Matt are counting drum beats. Tom hits a snare drum every 2 beats. Sam hits a kettle drum every 5 beats. Matt hits a bass drum every 8 beats. Tom, Sam and Matt start by hitting their drums at the same time. How many beats is it before Tom, Sam and Matt next hit their drums at the same time?
TRY THESE: Find the LCM MODEST ONES TRICKIER ONES 24 and 40 70 and 175 42 and 63 35 and 75 44 and 242 50 and 70 24 and 60 240 and 540 48 and 60 28 and 48 66 and 48 75 and 105 56 and 35 20 and 56 42 and 54 42 and 98
Summary You should be able to: BAT write a number as a product of primes BAT Find the LCM of two numbers One thing I have learned is … One thing I can improve is …
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- Slides: 10