Numeracy · Guided Practice
Rounding
22 questions with answers and video solutions. Try each one before revealing the answer.
1
How many significant figures does 208 have?
Answer
3 significant figures
2
How many significant figures does 30082 have?
Answer
5 significant figures
3
How many significant figures does 0.02 have?
Answer
1 significant figure
4
How many significant figures does 0.000805 have?
Answer
3 significant figures
5
How many significant figures does 125.50 have?
Answer
5 significant figures
6
How many significant figures does 2040 have?
Answer
3 significant figures
7
How many significant figures does 98.2 have?
Answer
3 significant figures
8
How many significant figures does 450 have?
Answer
2 significant figures
9
How many significant figures does 1.00023 have?
Answer
6 significant figures
10
How many significant figures does 0.999 have?
Answer
3 significant figures
11
How many significant figures does 9.99 have?
Answer
3 significant figures
12
Round 208 to 2 significant figures.
Answer
210
13
Round 30082 to 3 significant figures.
Answer
30100
14
Round 0.02 to 1 significant figure.
Answer
0.02
15
Round 0.000805 to 2 significant figures.
Answer
0.00081
16
Round 125.50 to 2 significant figures.
Answer
130
17
Round 2040 to 2 significant figures.
Answer
2000
18
Round 98.2 to 1 significant figure.
Answer
100
19
Round 450 to 1 significant figure.
Answer
500
20
Round 1.00023 to 3 significant figures.
Answer
1.00
21
Round 0.999 to 2 significant figures.
Answer
1.0
22
Round 9.99 to 2 significant figures.
Practice questions courtesy of Maths.scot. Full written solutions are on his site — the links above go straight to them.