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Test 1 Number Theory, Fractions and Rounding I Flashcards | StudBud
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Test 1 Number Theory, Fractions and Rounding I
Test 1 Number Theory, Fractions and Rounding I
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A online CSEC multiple choice for students who will be sitting the CSEC Maths examination
Flashcards
45 cards
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Practice quiz
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Questions
45
Answers
1
Which number is written in standard form ?
0.5 x 103
15 x 10
150 x 10
1.5 x 102
2
2/5 + 1/5 =
3/8
3/5
7/15
2/15
3
How many prime numbers are there
between
1 and 18?
7
5
4
6
4
Which number is both a factor and a multiple of 12?
2
12
24
6
5
What is the HCF of 6, 12 and 18
18
12
6
3
6
11.1/0.01
110
111
1100
1110
7
How many prime numbers are there between 40 and 60?
5
10
3
6
8
6.750x10
3
0.675
6750
0.000675
0.00675
9
25x3.5=87.5, then 2.5x0.35=
8.75
0.875
0.0875
87.5
10
220/(0.2)
2
5000
5500
50
550
11
3299 correct to 2 significant figures is:
3200
3300
33
32
12
What is 2(3/5) ?
5/7
5/5
6/5
6/10
13
What is the multiplicative inverse of 1/4?
4
- 1/4
0
1
14
3
2
x 3
5
/3
4
9
7/4
27
10/4
15
Which number is a multiple of 7 ?
50
56
65
48
16
What is the next prime number after 47?
53
49
57
61
17
-5-(-9)=
-4
-15
4
15
18
What is 3 927 expressed to the nearest hundred?
3920
3800
3920
3900
19
Which statement is correct?
-7>-11
4<-5
5<3
-4>-3
20
(0.05)
2
=
0.25
0.025
2.5
0.0025
21
In which of the of the following numbers does the digit 2 represent hundredths ?
17.248
58.672
47.62
4280.6
22
Which statement below is
incorrect ?
(-8) x (-4)= -32
(-8)+(-4)= -12
(-8) - (-4)= -4
(-8) / -(4)= 2
23
The place value of the 2 in the number 3245 is?
two hundred
seventy two
thirty 6
one hundred
24
What is the smallest number that can be added to make a prime number?
4
12
2
6
25
36/0.3 =
120
1.2
1200
12
26
(0.3)
4
=
0.0081
0.0012
0.81
0.12
27
What is 23.6987 to two significant figures ?
23.7
23
24
23.69
28
Any number which is divisible by both 3 and 5 must?
be a factor of fifteen
end with a five
be an odd number
be a multiple of fifteen
29
The LCM of 12 and 27 and the HCF of the numbers 24 and 64 have a highest common factor of?
8
108
216
4
30
0.8x0.03=
0.024
0.240
2.40
2.04
31
7/8 + 2/7= (find the LCM of 8 and 7, then continue working from there)
9/56
2/8
9/15
65/56
32
3.2 x 0.002 =
0.064
6.4
0.0064
0.64
33
Which of the following is a composite number ? I.2 II.47 III.57
II and III only
III only
I only
I and II only
34
The value of the 2 in the number 452.3 is
2 tens
2 ones
2 hundreds
2 tenths
35
The LCM of 15, 9 and 3 is
15
45
27
135
36
If 2.0028 is approximated to 2.003, the approximation is correct to
3 decimal places
4 decimal places
2 significant figures
3 significant figures
37
The number 3.14159, correct to 3 decimal places
3.140
3.141
3.142
3.145
38
The fraction 3/7 when written with the numerator 21 is the same as
3/21
9/21
21/49
21/7
39
Written as a single fraction, 1/2-1/3x1/4 is
5/24
1/24
1/2
5/12
40
31 - 0.19=
30.81
2.91
12
29.1
41
What is 0.00245 in standard form ?
2.45 x 10-3
0.245x 102
24.5 x 10-2
2.45 x 103
42
Which number is prime number?
87
75
71
93
43
What is the value of (1 and 2 over 3 minus five over six)divided by two and five over twelve ?
10/29
5/12
2 1/12
2 9/10
44
The value of the digit 3 in 23045
5
when converted to base 10 is
30
75
375
300
45
0.007 written as a common common fraction is
7/100
7/1000
1/7
7/10
