Chapter 7 Decimals Worksheet - New Century Maths Page 14
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385 Add each set of prices. Calculate the exact change from the amount shown in brackets.
a $7.01
$0.34
$2.19
($10)
b $2.14
$1.34
39c
$0.45
($5)
c $5.26
$10.09
$14.31
$11.36
($50)
d $0.85
$4.34
$1.17
$8.79
($20)
e $11.34
$9.15
$3.95
$7.92
$2.36
($50)
f $1.46
$13.74
$42.99
$7.46
$29.05
($100)
6 To keep fit, Angela runs each day. Last week she ran 3.8 km, 4.1 km, 2.3 km, 2.6 km,
3.0 km, 0.9 km and 1.8 km. How far did she run last week?
7 A truck carrying sand had a total mass of 13 248.56 kg. If the truck alone had a mass of
5210.8kg, what is the mass of the sand?
8 Five runners in the school’s 100 m race recorded the following times: 13.5 s, 13.81 s,
12.7 s, 14.62 s, 12.45 s
a Place these times in order, from fastest to slowest.
b What is the time difference between the first runner to finish and the last?
c If the runner in second place had run 0.3 seconds faster, would she have won the race?
Explain your answer.
9 Krysten’s expenses for one week are shown in
Item
Cost ($)
the table on the right.
Food
128.80
a How much did she spend?
Clothing
88.45
b How much did she have left out of $620.80?
Car
58.35
Rent
185.00
Entertainment
78.95
Savings
66.00
10 A block of wood 11.27 cm thick has 0.34 cm shaved off one side and 0.55 cm shaved
off the other side. How thick is the block of wood then?
11 Wendy was making teddy bears. She needed these amounts of material for five bears:
2.6 m, 0.8 m, 1.2 m, 0.75 m and 0.88 m. How much material did she need altogether?
12 The odometer in a car measures the total distance the car has travelled. The odometer
below reads 21 456.9 km. The blue digit shows tenths of a kilometre.
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1
4
5
6
9
Find the distance travelled during a holiday if the odometers below give the readings at
the start of the holiday and at the end of the holiday.
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1
5
3
211
DECIMALS
CHAPTER 7
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