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Word Problem: Decimals - 2 | Mathematics for Class 5 PDF Download

Q1: Neena needs 13.25 cm of a ribbon to wrap a gift and 12.9 cm of the same ribbon to tie the flowers. How much ribbon does she need in all for both the tasks?

Sol: Ribbon for gift = 13.25 cm
Ribbon for flowers = 12.9 cm
Total ribbon needed = 13.25 cm + 12.9 cm = 26.15 cm 
Neena needs a total of 26.15 cm of ribbon.

Q2: At a dairy, the milkman prepares 25 L of lassi. If by the end of the day, the milkman is able to sell 13.907 L of lassi, find out the amount of lassi left at the dairy.

Sol: Initial amount of lassi = 25 L
Lassi sold = 13.907 L
Lassi remaining = 25 L - 13.907 L = 11.093 L 
The dairy has 11.093 L of lassi left.

Q 3: Saina makes 5.25 L of fruit punch while Reshma makes 5.701 L of fruit punch. Who has made more fruit punch and by how much?

Sol: Saina's fruit punch = 5.25 L
Reshma's fruit punch = 5.701 L
Difference = 5.701 L - 5.25 L = 0.451 L 
Reshma made more fruit punch by 0.451 L.

Q4: Manav bought 7 stickers at ₹3.56 each. How much did he pay for the stickers?

Sol: Cost per sticker = ₹3.56
Number of stickers = 7
Total cost = ₹3.56 × 7 = ₹24.92 
Manav paid ₹24.92 for the stickers.

Q5: Rajesh has ordered 14 T-shirts for the salesmen at his shop. If each t-shirt costs ₹781.35, find the cost of all 14 T-shirts.

Sol:Cost per T-shirt = ₹781.35
Number of T-shirts = 14
Total cost = ₹781.35 × 14 = ₹10,938.90
The total cost for the T-shirts is ₹10,938.90.

Q6: At an adventure camp, 4.875 litres of badam milk was distributed equally among 15 students. How much milk did each child get?

Sol: Total milk = 4.875 liters
Number of students = 15
Milk per student = 4.875 liters ÷ 15 = 0.325 liters 
Each student got 0.325 liters of badam milk.

Q7: Twenty-six cookies cost ₹155.48. What is the cost of 1 cookie?

Sol:Total cost = ₹155.48
Number of cookies = 26
Cost per cookie = ₹155.48 ÷ 26 = ₹5.98
Each cookie costs ₹5.98.

Q8: Diya is a designer. She makes a half jacket using 2.9 m of cloth. How many half jackets can she make if she has 98.6 m cloth in all?

Sol: Cloth per jacket = 2.9 m
Total cloth = 98.6 m
Number of jackets = 98.6 m ÷ 2.9 m = 34 jackets 
Diya can make 34 half jackets.

Q9: Ria has 45.6 m long lace. How many pieces of lace 1.2 m long can she cut from the total lace she has?

Sol:Total length of lace = 45.6 m
Length of each piece = 1.2 m
Number of pieces = 45.6 m ÷ 1.2 m = 38 pieces
Ria can cut 38 pieces of lace.

Q10: A stack of 54 paper plates is 1.458 cm thick. Calculate the thickness of one paper plate.

Sol:Total thickness = 1.458 cm
Number of plates = 54
Thickness per plate = 1.458 cm ÷ 54 ≈ 0.027 cm 
Each paper plate is approximately 0.027 cm thick.

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FAQs on Word Problem: Decimals - 2 - Mathematics for Class 5

1. What are decimals and how are they used in everyday life?
Ans.Decimals are a way to represent fractions in a base ten system. They are commonly used in everyday life for measuring, pricing, and calculating. For example, when shopping, prices are often listed in decimals (e.g., $3.99), and when cooking, measurements might be given in decimal forms (e.g., 1.5 cups).
2. How do you add and subtract decimals?
Ans.To add or subtract decimals, align the numbers by their decimal points. If necessary, add zeros to make sure both numbers have the same number of decimal places. Then, simply add or subtract as you would with whole numbers, placing the decimal point in the result directly below the other decimal points.
3. What is the importance of rounding decimals?
Ans.Rounding decimals is important for simplifying calculations and making numbers easier to work with. It helps in estimating and making quick decisions, especially in financial transactions where precision is not always necessary. Rounding ensures that you can communicate numbers clearly and concisely.
4. How do you multiply and divide decimals?
Ans.To multiply decimals, multiply the numbers as if they were whole numbers and then place the decimal point in the product. The total number of decimal places in the factors determines the placement of the decimal in the result. For division, move the decimal point of the divisor to make it a whole number, and then move the decimal point of the dividend the same number of places. Finally, divide as you would with whole numbers.
5. What common mistakes should I avoid when working with decimals?
Ans.Common mistakes when working with decimals include misaligning decimal points, forgetting to adjust decimal places when adding or subtracting, and incorrectly placing the decimal point in the result of multiplication or division. To avoid these errors, always check your work and ensure that you are aligning numbers correctly.
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