Checkpoint 3 week 3 due day 5

# Checkpoint 3 week 3 due day 5 - Checkpoint 3 week 3 due day...

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Checkpoint 3 week 3 due day 5 Section 3.1 18.) 13/18 + 11/18=  add the numerators: 13+11 = 24 = 24/18 Divide the top and bottom by 6: = 4/3 38.) 9/11 - 3/11 + 7/11=  subtract the numerators: 9-3+7 = 13 13/11 44.) One task took 7 minutes , a second task took 12 minutes and a third task took 21 min. How long did the 3 tasks take, as  a fraction of a hour?  Add the minutes: 7+12+21 = 40 There are 60 minutes in an hour: 40/60 Divide through by 20: 2/3 of an hour 50.) Find the perimeters of the triangles with 3/8 cm, 3/8 cm, and 3/8 cm  P = S1 + S2 + S3 3/8 + 3/8 + 3/8 = 9/8 Section 3.2 22.) Find Least common multiple for 12, 20 and 35  Factor each: 12 = 2*2*3 20 = 2*2*5 35 = 5*7  Take factors from each: 2*2*3*5*7= 420 Section 3.3

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36.) 1/3 + 5/12 + 4/5 =  Find least common denominator for fractions with given denominators. 1/3 + 5/12 + 4/5. Cd = 60
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Checkpoint 3 week 3 due day 5 - Checkpoint 3 week 3 due day...

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