Question

1 the expression \\(-490 \div (-7)\\) is equal to:
a 483
b 70
c -70
d -497

2 the figure 2613.23 rounded to 3 significant figures is:
a 2610
b 2600
c 2613.230
d 26

3 which of the following is not written correct to 2 significant figures?
a 41
b 0.0049
c 1.7
d 0.06

4 which of the following is not a simplified ratio?
a 2:3
b 13:2
c 7:2
d 16:48

5 the ratio of \\(a : b\\) is \\(3 : 4\\), the ratio of \\(b : c\\) is \\(7 : 5\\).
which of the following is the correct ratio of \\(a\\) to \\(c\\)?
a 3:5
b 4:12
c 20:21
d 21:20

6 a truck carries apples, bananas and coconuts. the ratio of fruits are \\(2 : 3 : 5\\) respectively.
if there are 24 bananas, what is the total amount of fruit?
a 16
b 40
c 56
d 80

Explanation:

Question 1: Divide the integers

$$ -490 \div (-7) = 70 $$

Question 2: Round to 3 significant figures

$$ 2613.23 \approx 2610 $$

Question 3: Identify incorrect significant figures

$$
LATEXBLOCK0
$$

Question 4: Identify unsimplified ratio

$$ 16:48 = 1:3 $$

Question 5: Find the ratio of A to C

$$
LATEXBLOCK1
$$

Question 6: Calculate total amount of fruit

$$
LATEXBLOCK2
$$

Answer:

Question 1

• A 483
• (B) 70 (Correct answer)
• C -70
• D -497

Question 2

• (A) 2610 (Correct answer)
• B 2600
• C 2613.230
• D 26

Question 3

• A 41
• B 0.0049
• C 1.7
• D 0.06 (Correct answer)

Question 4

• A 2:3
• B 13:2
• C 7:2
• D 16:48 (Correct answer)

Question 5

• A 3:5
• B 4:12
• C 20:21
• D 21:20 (Correct answer)

Question 6

• A 16
• B 40
• C 56
• D 80 (Correct answer)