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
MATHEMATICS
0845/01
Paper 1
April 2021
45 minutes
You must answer on the question paper.
You will need:
Protractor
Tracing paper (optional)
INSTRUCTIONS
• Answer all questions.
• Use a black or dark blue pen. You may use an HB pencil for any diagrams or graphs.
• Write your name, centre number and candidate number in the boxes at the top of the page.
• Write your answer to each question in the space provided.
• Do not use an erasable pen or correction fluid.
• Do not write on any bar codes.
• You should show all your working in the booklet.
• You are not allowed to use a calculator.
INFORMATION
• The total mark for this paper is 40.
• The number of marks for each question or part question is shown in brackets [ ].
This document has 16 pages. Any blank pages are indicated.
IB21 05_0845_01/5RP
© UCLES 2021
[Turn over
2
1
Write the missing number in the box.
+ 650 = 1000
[1]
2
Complete these calculations.
30 + 80 + 60 =
40 +
+ 30 = 200
[1]
3
Here are four digit cards.
4
6
2
5
Use each of the digits once to make a total that is a multiple of ten.
+
[1]
© UCLES 2021
0845/01/A/M/21
3
4
(a) There are 205 students in one year group in a school.
97 are boys.
Write how many are girls.
girls
[1]
classrooms
[1]
(b) There are 223 students in another year group.
Classrooms can have a maximum of 30 students.
Write how many classrooms are needed for this year group.
© UCLES 2021
0845/01/A/M/21
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4
5
Round these values to the nearest dollar.
$7.57
$
$12.49
$
[1]
6
A rectangle has an area of 35 cm2.
The width of the rectangle is 5 cm.
Write the length of the rectangle.
cm
© UCLES 2021
0845/01/A/M/21
[1]
5
7
Here are 4 bags of beads.
Each bag has white and black beads.
bag A
bag B
bag C
bag D
A bead is selected from each bag without looking.
Write a letter to make these statements true.
Bag
has an even chance of picking a black bead.
Bag
has the best chance of picking a black bead.
Bag
has the best chance of picking a white bead.
[2]
8
Draw a line to join each activity to the best unit of time to measure it.
fly from London to New York
seconds
run a hundred metres
minutes
sail from London to New York
hours
cycle three kilometres
days
[2]
© UCLES 2021
0845/01/A/M/21
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6
9
Carlos has five number cards.
The mode of the five cards is 1
The sum of the five cards is 11
Write the missing number on each card.
2
3
[2]
10 Write how many millimetres there are in 15.5 centimetres.
mm
[1]
11 Here is some flour on the scales.
500
400
100
grams
300
200
Write the mass of the flour.
g [1]
© UCLES 2021
0845/01/A/M/21
7
12 Here is a recipe for leek and potato soup.
leek and potato soup
serves 6
700 g
leeks
375 g
potatoes
850 ml
stock
121 tablespoons cream
65 g
butter
Eva makes soup for 12 people.
Complete the list of ingredients.
leek and potato soup
serves 12
g
leeks
g
potatoes
ml
stock
tablespoons cream
g
butter
[2]
© UCLES 2021
0845/01/A/M/21
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8
13 Here is a right angled triangle on a square grid.
y
10
9
8
7
6
5
4
3
2
1
0
0
1
2
3
4
5
6
7
8
9
10
x
The right angled triangle is translated 2 squares right and 1 square down.
Draw the right angled triangle in its new position.
Use a ruler.
© UCLES 2021
[1]
0845/01/A/M/21
9
14 Match each fraction to an equivalent percentage.
3%
1
2
7%
3
100
30%
50%
7
10
70%
[1]
15 The top number in this diagram is the sum of the two numbers below.
30
12
18
12 + 18 = 30
Complete this diagram using the same rule.
6005
3997
4218
[2]
© UCLES 2021
0845/01/A/M/21
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10
16 A train leaves at quarter past eight in the evening.
Write the time using the 24-hour clock system.
[1]
17 Draw a ring around all the multiples of 25 in the table.
535
900
765
350
185
260
815
430
675
[1]
18 Here are four numbers.
33.9
35.2
36.4
38.7
Use each number once to make these statements correct.
<
72.6 =
36.2
+
>
35.1
[2]
© UCLES 2021
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11
19 Write
13
as a mixed number.
8
[1]
20 Here are five number cards.
40 hundreds
40 tens
400 units
400 hundreds
400 tens
Draw lines to match cards with the same value.
[1]
21 Complete the following.
0.7 × 7 =
4.8 ÷ 6 =
120 × 0.4 =
[2]
© UCLES 2021
0845/01/A/M/21
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12
22 Here is a shape on a 5 mm squared grid.
(a) Write the area of the shape in cm2.
cm2 [1]
(b) The shape is the net of a cube.
Write the length of one edge of the cube in cm.
cm
[1]
23 Hassan finds the product of two multiples of 10
The answer is 2400
List all the calculations that give his answer.
[2]
© UCLES 2021
0845/01/A/M/21
13
24 Here is an incomplete calculation.
+
=
1
0
0
0
Use only the digits 3, 6 and 7 to complete this calculation.
Each digit can be used more than once.
[1]
25 The line graph shows the average temperature in Athens for 8 months.
Average temperature in Athens
30
25
20
15
Average
temperature
°C
10
5
0
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Months
Naomi wants to visit Athens in a month when the average temperature is higher
than 20°C.
List all the months she could choose.
[1]
© UCLES 2021
0845/01/A/M/21
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14
26 Three 2-digit numbers are added together.
The total is 60
The largest number is nine multiplied by three.
The smallest number is a multiple of 6
Write the three numbers.
[1]
27 Pierre and Yuri each think of a different number.
Yuri says,
We double our numbers.
My answer is 16 more than
Pierre’s answer.
Pierre’s number is 23
Work out Yuri’s number.
[1]
© UCLES 2021
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15
28 Here is a number line.
A
B
0
10 000
Estimate what number is shown by arrow A.
Draw an arrow to show the number 500 less than the number shown by arrow B.
[2]
29 Safia says,
You can solve the problem
16 x 34 by multiplying 34 by
10 and by 6, then adding the
two answers.
Use Safia’s method to calculate 16 × 9
You must show your working.
[1]
© UCLES 2021
0845/01/A/M/21
16
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publisher will be pleased to make amends at the earliest possible opportunity.
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Assessment International Education Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download
at www.cambridgeinternational.org after the live examination series.
Cambridge Assessment International Education is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of the University of
Cambridge Local Examinations Syndicate (UCLES), which itself is a department of the University of Cambridge.
© UCLES 2021
0845/01/A/M/21
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