Addition
Multiplication
Counting
Primes
Geometry
100
Find the sum 472 + (219 + 28) .
719
100
What is 5 \cdot 5 \cdot 5 \cdot 5 \cdot 2 \cdot 2 \cdot 2 \cdot 2 ?
10,000
100
How many numbers are on the list
3,4,5,...,78,79,80
78
100
This is the only even prime number.
2
100
A floor decoration is a circle with eight rays pointing from the center. The rays form eight congruent central angles. One of the rays points due north. What is the measure in degrees of the smaller angle formed between the ray pointing East and the ray pointing Southwest?
135
200
What is the sum of the first 10 odd integers? That is what is 1+3+...+17+19
100
200
Compute (1\cdot 5\cdot 25\cdot 125)\cdot (16\cdot 8\cdot 4\cdot 2\cdot 1)
16,000,000
200
How many numbers are in the list -33, -28, -23, \ldots, 52, 57?
19
200
How many prime numbers are less than 50
15
200
Point D is on side AC of triangle ABC , \angle ABD=15^{\circ} and \angle DBC=50^{\circ} . What is the measure of angle BAD , in degrees?
25
300
Compute 236+43+157+64
500
300
Find 1\cdot 3 \cdot 1 \cdot 1 \cdot 33 \cdot 1 \cdot 2 \cdot 1 \cdot 20
3960
300
How many positive 3-digit numbers are divisible by 11?
81
300
For how many two-digit primes is the sum of the digits equal to 8?
3
300
How many degrees are in the sum of the measures of the six numbered angles pictured?
360
400
Compute
-22+(-21)+(-20)+...+21+22+23
23
400
Compute
-22\cdot (-21)\cdot(-20)\cdot...\cdot 21\cdot 22 \cdot 23
0
400
How many three-digit positive integers exist, all of whose digits are 2's and/or 5's?
8
400
What is the least prime number which is the sum of two distinct positive perfect squares?
5
400
What is the measure, in degrees, of one interior angle of a regular hexagon (6 sides)?
120
500
What is the sum of the first 50 even numbers. That is, 2+4+6+...+98+100
2550
500
Compute 82\cdot15+5\cdot 82\cdot10+7\cdot5\cdot82 .
8200
500
How many different three-letter sets of initials are possible using the letters A through G?
343
500
I am playing a walking game with myself. On move 1, I do nothing, but on move n where 2 \le n \le 25 , I take one step forward if n is prime and two steps backwards if the number is composite. After all 25 moves, I stop and walk back to my original starting point. How many steps long is my walk back?
21
500
A regular pentagon and a regular hexagon are coplanar and share a common side \overline{AD} , as shown. What is the degree measure of angle BAC ?
12