Problem Solving
In solving word problems, first, identify what is asked. Then, look for the given facts. Establish the number sentence and the operation/s to be used. Make sure that the operation/s used will bring out the correct answer. Check the answer using the number sentence and see if it will satisfy the given condition.
Learning Task 2:Answers:
- 129.36 cm
- ₱212.50.
- 47 cm
- 28.85 km
Solutions:
1. Asked: The measurement of the 4th side.
Given: P = 412.95 cm
s₁ = 85.56 cm
s₂ = 112.77 cm
s₃ = 85.26 cm
Operation: addition, subtraction
Number Sentence: P = s₁ + s₂ + s₃ + s₄
Solution: P = s₁ + s₂ + s₃ + s₄
412.95 = 85.56 + 112.77 + 85.26 + s₄
412.95 = 283.59 + s₄
412.95 - 283.59 = s₄
129.36 = s₄
Answer: s₄ = 129.36 cm
2. Asked: The change from ₱500.
Given: 4 items worth ₱39.90, ₱68.60, ₱58.75, ₱120.25
Operation: addition, subtraction
Number Sentence: ₱500 - (₱39.90 + ₱68.60 + ₱58.75 + ₱120.25) = N
Solution: ₱500 - (₱39.90 + ₱68.60 + ₱58.75 + ₱120.25) = N
₱500 - ₱287.50 = N
₱212.50 = N
Answer: The change is ₱212.50.
3. Asked: The perimeter of the rectangle.
Given: 13.8 cm - length of the rectangle
9.7 cm - width of the rectangle
Operation: multiplication, addition
Number Sentence: P = 2l + 2w
Solution: P = 2l + 2w
P = 2(13.8) + 2(9.7)
P = 27.6 + 19.4
P = 47
Answer: The perimeter of the rectangle is 47 cm.
4. Asked: The distance Obed and Dario hiked in two days.
Given: 15.1 km - distance Dario and Obed hiked in day 1.
13.75 km - distance Dario and Obed hiked in day 2.
Operation: addition
Number Sentence: 15.1 + 13.75 = N
Solution: 15.1 + 13.75 = N
28.85 = N
Answer: Obed and Dario hve hiked a total distance of 28.85 km.
How to solve word problems: https://brainly.ph/question/20944032
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