DECIMAL WORD PROBLEMS
Problem 1 :
A chemist mixed 6.35 grams of one compound with 2.45 grams of another compound. How many grams were there in the mixture.
Solution :
Amount of compound in the mixture is
= 6.35 + 2.45
= 8.8 grams
Problem 2 :
If the cost of a pen is $10.50, a book is $25.75 and a bag is $45.50, the find the total cost of 2 books, 3 pens and 1 bag.
Solution :
Total cost of 2 books, 3 pens and 1 bag is
= 2(25.75) + 3(10.50) + 1(25.75)
= 51.50 + 31.50 + 25.75
= $108.75
Problem 3 :
John wants to buy a bicycle that cost $ 450.75. He has saved $ 125.35. How much more money must John save in order to have enough money to buy the bicycle ?
Solution :
Amount of money that John still has to save is
= 450.75 - 125.35
= $325.40
Problem 4 :
Jennifer bought 6.5 kg of sugar. she used 3750 grams. How many kilograms of sugar were left ?
Solution :
3750 grams = 3750/1000 kg
3750 grams = 3.75 grams
Amount of sugar left (in kilograms) is
= 6.5 - 3.75
2.75 kg
Problem 5 :
The inner radius of a pipe is 12.625 mm and the outer radius is 18.025 mm. Find the thickness of the pipe.
Solution :
Thickness of the pipe is
= Outer radius - Inner radius
= 18.025 - 12.625
= 5.40 mm
Problem 6 :
A copy of English book weighs 0.45 kg. What is the weight of 20 copies ?
Solution :
Weight of 20 copies of English book is
= 20 ⋅ 0.45
= 9 kg
Problem 7 :
Find the weight of 25.5 meters of copper wire in kilograms, if one meter weighs 10 grams.
Solution :
Weight of 25.5 meters of copper wire is
= 25.5 ⋅ 10
= 255 grams
= 255/1000 kilograms
= 0.255 kilograms
Problem 8 :
Robert paid $140 for 2.8 kg of cooking oil. How much did 1 kg of the cooking oil cost ?
Solution :
The cost of 1 kg of cooking oil is
= 140 / 2.8
= $50
Problem 9 :
If $20.70 is earned in 6 hours, how much money will be earned in 5 hours ?
Solution :
Amount of money earned in 1 hour is
= 20.70 / 6
= 3.45
Amount of money earned in 5 hours is
= 5 ⋅ 3.45
= $17.25
Problem 10 :
A pipe is 76.8 meters long. What will the greatest number of pieces of pipe each 8 meters long that can be cut from this pipe ?
Solution :
Greatest number of pieces can be cut from the pipe is
= 76.8 / 8
= 9.6
So, 9 pieces of pipe each 8 meters long can be cut from the pipe of length 76.8 meters.
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You can also visit the following web pages on different stuff in math.
WORD PROBLEMS
Word problems on simple equations
Word problems on linear equations
Word problems on quadratic equations
Area and perimeter word problems
Word problems on direct variation and inverse variation
Word problems on comparing rates
Converting customary units word problems
Converting metric units word problems
Word problems on simple interest
Word problems on compound interest
Word problems on types of angles
Complementary and supplementary angles word problems
Trigonometry word problems
Markup and markdown word problems
Word problems on mixed fractrions
One step equation word problems
Linear inequalities word problems
Ratio and proportion word problems
Word problems on sets and venn diagrams
Pythagorean theorem word problems
Percent of a number word problems
Word problems on constant speed
Word problems on average speed
Word problems on sum of the angles of a triangle is 180 degree
OTHER TOPICS
Time, speed and distance shortcuts
Ratio and proportion shortcuts
Domain and range of rational functions
Domain and range of rational functions with holes
Graphing rational functions with holes
Converting repeating decimals in to fractions
Decimal representation of rational numbers
Finding square root using long division
L.C.M method to solve time and work problems
Translating the word problems in to algebraic expressions
Remainder when 2 power 256 is divided by 17
Remainder when 17 power 23 is divided by 16
Sum of all three digit numbers divisible by 6
Sum of all three digit numbers divisible by 7
Sum of all three digit numbers divisible by 8
Sum of all three digit numbers formed using 1, 3, 4
Sum of all three four digit numbers formed with non zero digits
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