Exponents
What is the exponent in 2⁵?
5
What is scientific notation used for?
Writing very large or very small numbers in a shorter form.
How many significant figures are in 4.18?
3
What are leading zeros?
Zeros before the first non-zero digit.
What is 2³?
8
What is 4²?
16
Write 4,000 in scientific notation.
4 × 10³
How many significant figures are in 4.2?
2
What are trailing zeros?
Zeros at the end of a number.
Which unit measures area: m² or m³?
m²
What is 3³?
27
Write 26,000,000 in scientific notation.
Answer: 2.6 × 10⁷
Round 4.186 to three significant figures.
4.19
How many leading zeros are in 0.0049?
3
Which unit measures volume: m² or m³?
m³
What does 'squared' mean?
Multiplied by itself twice (a × a).
Write 4.2 × 10³ as an ordinary number.
Answer: 4,200
Which is more precise: 4.2 or 4.18?
4.18
Which are integers: −7, 3.5, 0, 12?
−7, 0, 12
What is 6.5 × 10⁵ as an ordinary number?
650,000
What is the difference between 5² and 5³?
Answer: 5² = 25; 5³ = 125.
Write 0.0045 in scientific notation.
Answer: 4.5 × 10⁻³
What can happen if we round to too few significant figures?
A rounding error can occur.
How many significant figures are in 5.200?
4
A student uses m³ instead of m² for area. What is the error?
The student cubed the units instead of squaring them.