PRE-TEST 1+ 4 4 APARTMEN 2 Perform the described operations and answer the problems in the following . 2. Add 1 and 3.5 - 2 4. Friends always share food with each other. One day you were craving for pansit However, you left your money at home, so your friends shared their snacks to you. Jun gave you half of his pansit serving while Lea gave you e of hers. How many pansit servings did you have for your snacks? 5. Jeanna was 39 74 kg before the Enhanced Community Quarantine. After a quarantine of 3 months, she weighed 43 Akg. How much weight did she gain? 8 DICO
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Answer:
1. 1/2 + 1/4 = 3/4
2. 1 4/5 - 1/2 = 13/10 or 1 3/10
3. 5 - 2 3/8 = 21/8 or 2 5/8
4. 1/2 + 3/4 = 5/4
5. 43 3/4 - 39 1/4 = 4 1/2kgs
Step-by-step explanation:
1. 1/2 + 1/4 =
step 1: get the least common denominator. to do this, multiply 1/2 with 2/2 to get 2/4.
step 2: apply the operation. add the numerator and copy the denominator
2/4 + 1/4 = 3/4
2. 1 4/5 - 1/2 =
step 1: convert improper fraction to proper fraction (1 4/5 to 9/5)
step 2: get the common denominator of 2 and 5 which is 10.
step 3: divide 10 by the denominator and multiply the numerator (ex. 10/5=2; 2x9= 18). you get 18/5 and -5/10
step 4: apply the operation. subtract 18 by 5 for the numerator and copy the denominator.
3. 5 - 2 3/8
step 1: convert improper fraction to proper fraction (2 3/8 to 19/8)
step 2: get the common denominator by multiplying 5/1 by 8/8
step 3: apply the operation 40/8 - 19/8