UTMA Number Theory and Arithmetic 2

Question 1

What is the value of 5! (5 factorial)?

Accepted Answer

120

Answer

5! = 5 × 4 × 3 × 2 × 1 = 120.

Question 2

Which number is divisible by both 4 and 6 but not by 24?

Accepted Answer

36

Answer

36 is divisible by 4 (36÷4=9) and 6 (36÷6=6) but 36÷24 is not an integer.

Question 3

What is the value of √(169) + √(25)?

Accepted Answer

18

Answer

√169 = 13 and √25 = 5, so 13 + 5 = 18.

Question 4

In scientific notation, what is 0.00047 written as?

Accepted Answer

4.7 × 10⁻⁴

Answer

Moving the decimal 4 places right gives 4.7, so 0.00047 = 4.7 × 10⁻⁴.

Question 5

What is the absolute value of (−7 + 3)?

Accepted Answer

4

Answer

−7 + 3 = −4, and |−4| = 4.

UTMA - University of Toronto Math Assessment Practice Test