Sam rode his bike 2/5 of a mile and walked another 3/4 of a mile. How far did he travel?
Answers
Step-by-step explanation:
total distance- 2/5+3/4
8/20+15/20
23/20 miles......
Answer:
1.15
step by step explanation
Looking at the two numbers, we see that the smallest number that both 5 and 4 go into evenly is 20, so our smallest common denominator is 20 and we want to work toward converting our two numbers into twentieths.
Multiply 2/5 x 4/4 = 8/20. 2x4=8 and 5x4=20 (we choose 4/4 because it is equal to 1, and gives us 20 in the denominator.) Any number times one is itself.
Multiply 3/4 x 5/5 = 15/20 (same reasoning for choosing 5/5 as above.)
Now that both numbers are expressed in twentieths, you can add the numerators: 8+15 = 23. So the answer can be reduced to 1 and 3/20. Which, if you break our your calculator and divide 23 by 20, you will find is OH's answer: 1.15
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