Math

Decimals

100

What is 0.1 + 0.1?

0.2

200

What is 0.79 - 0.61?

0.18

300

What is 0.80564 + 0.231758

1.037398

400

What is 0.789 multiplied by 27?

21.303

500

What is 243547615920 divided by 0.5?

487,095,231,840

Fractions

100

What is 5/10 + 2/10

7/10

200

Is 5/10 equal to 0.500000000000000000000000000000000?

Yes

300

What is 5/10+6/2+276/3?

95.5

400

What is 3/10x237

71.1.

500

What is(53+107)÷(209−41)×(138)simplified?

131+3/7

Algebra

100

Solve for x: x+7=19

x=12

200

Solve for x: 3x−5=22

x=9

300

Solve for x: 2(x−4)=3x+6

x=-14

400

Solve for x: 3 5x−2 = 2 x+10

x=34/7

500

Solve the system of equations: { 2x+3y=17 5x−y=9

The solution to the system is \(x = \frac{44}{17}\) and \(y = \frac{67}{17}\).

Probability

100

A fair coin is flipped once. What is the probability of getting heads?

1/2

200

A fair six-sided die is rolled once. What is the probability of rolling a number greater than 4?

1/3

300

A bag contains 3 red marbles and 5 blue marbles. One marble is drawn at random. What is the probability it is red?

3/8

400

A coin is flipped twice. What is the probability of getting exactly one heads?

1/2

500

1. A deck of 52 cards is shuffled. Two cards are drawn without replacement. What is the probability that both cards are aces?

1/221

Prime and Composite Numbers

100

Is 11 a prime or composite number?

11 is a prime number

200

Is 21 a prime or composite number? Explain using factors.

21 is a composite number

300

List all factors of 36 and state whether it is prime or composite

1, 2, 3, 4, 6, 9, 12, 18, and 36

400

Write 84 as a product of prime numbers.

2 × 2 × 3 × 7

500

1. Find all prime numbers between 50 and 80, then determine how many composite numbers are in that range.

53, 59, 61, 67, 71, 73, and 79