Multiply the fractions ✖️

$$\frac{4}{5} \times \frac{4}{4} = \;?$$

🚀 Space algebra — crack the code:

$$🚀 + 🚀 + 🚀 = 30$$

$$🚀 + 🛸 + 🛸 = 16$$

$$🛸 × 🌟 - 🚀 = 2$$

$$🌟 + 🛸 × 🚀 = ?$$

➕ What is the sum of the first 20 odd numbers ($1 + 3 + 5 + \cdots$)?

Clock angle 🕐

Angle between the hands at $4{:}00$ (in degrees)?

📒 A book and a pen cost 110 dollars together.

The book costs 100 dollars MORE than the pen.

How many dollars is the pen? (Careful… 🪤)

Multiply the fractions ✖️

$$\frac{2}{5} \times \frac{5}{5} = \;?$$

💳 Mr. Ben borrows 1000 dollars at 2% interest per month.

How many dollars must he repay in total after 3 months?

Ages 👨‍👦

A father is twice as old as his son. Together their ages add up to 60.

How old is the son?

↔️ Two cars leave the same city in opposite directions at 50 km/h and 70 km/h.

How many km apart are they after 2 hours?

⚡ What is $2^{10}$?

🐄 12 cows finish a food supply in 20 days.

With 15 cows, how many days will the supply last?

🖐️ In your head — there is a 2-second trick:
$$35^2 = \,?$$

Two dice 🎲🎲

Probability the sum is $3$? (as a fraction)

Larger root wins 🏆

$$x^2 - 8x + 15 = 0$$

Give the larger root.

Pythagoras 📐

A right triangle has legs $8$ and $6$.

Find the hypotenuse.

Greatest common divisor 🔢

$$\gcd(20, 15) = \;?$$

⭕ The area of a circle of radius 10 cm is? (use $\pi = 3.14$, in cm²)

🔢 GCD and LCM — evaluate each:

🪙 Two coins are flipped together.

What is the probability of two heads? (fraction)

💯 Percentages II — find each:

Definite integral ∫

$$\int_0^{3} x^{3}\, dx = \;?$$

Ages 👨‍👦

A father is 3 times as old as his son. Together their ages add up to 60.

How old is the son?

➗ How many factors does 36 have?

Multiply the fractions ✖️

$$\frac{2}{3} \times \frac{1}{2} = \;?$$

Two coins 🪙🪙

Probability of exactly one head? (as a fraction)

Greatest common divisor 🔢

$$\gcd(39, 43) = \;?$$

Two coins 🪙🪙

Probability of two heads? (as a fraction)

📚 In how many ways can 4 different books be arranged in a row?

Multiply the fractions ✖️

$$\frac{2}{4} \times \frac{1}{4} = \;?$$

Least common multiple 🔢

$$\text{lcm}(3, 3) = \;?$$

Prime count 🧮

How many prime numbers are below $50$?

Handshakes 🤝

$7$ people each shake hands once. How many handshakes?

Geometry 📐

A right triangle has legs of 3 cm and 4 cm.

Find the hypotenuse (in cm).

👧 Sari is 3 years older than Dina. Together their ages sum to 27.

How old is Dina?

Clock angle 🕐

Angle between the hands at $1{:}00$ (in degrees)?

Greatest common divisor 🔢

$$\gcd(54, 49) = \;?$$

Pizza night 🍕

A pizza is cut into 8 slices. Tom eats 4 and Ana eats 2.

What fraction of the pizza is left?

🔚 What is the units digit of $7^{100}$?

Neighbors 🔢

The sum of three consecutive whole numbers is 90.

What is the smallest of the three?

Clock angle 🕐

Angle between the hands at $5{:}00$ (in degrees)?

Pythagoras 📐

A right triangle has legs $12$ and $5$.

Find the hypotenuse.

📐 A right triangle has legs of 6 cm and 8 cm.

How many cm is the hypotenuse?

✏️ 2 pencils and 3 books cost 21 dollars. One pencil costs 3 dollars.

How many dollars is one book?

Ages 👨‍👦

A father is 3 times as old as his son. Together their ages add up to 40.

How old is the son?

Multiply the fractions ✖️

$$\frac{2}{5} \times \frac{2}{5} = \;?$$

Slope check 📈

$$\left.\frac{d}{dx} x^{2} \right|_{x=1} = \;?$$

The classic Gauss trick 😉
$$1 + 2 + 3 + \cdots + 100 = \,?$$

🃏 One card is drawn from a 52-card deck.

What is the probability of drawing an Ace? (fraction)

Neighbors 🔢

The sum of three consecutive whole numbers is 117.

What is the smallest of the three?

🏗️ 16 workers finish a house in 30 days.

To finish it in 24 days instead, how many workers are needed?

Clock angle 🕐

Angle between the hands at $7{:}00$ (in degrees)?

Two dice 🎲🎲

Probability the sum is $11$? (as a fraction)

Least common multiple 🔢

$$\text{lcm}(7, 4) = \;?$$

Solve for $x$:
$$2^x = 32$$

Pythagoras 📐

A right triangle has legs $4$ and $3$.

Find the hypotenuse.

Solve for $x$ 🔍

$$2x - 3 = 13$$

Least common multiple 🔢

$$\text{lcm}(6, 11) = \;?$$

Pizza night 🍕

A pizza is cut into 8 slices. Tom eats 2 and Ana eats 5.

What fraction of the pizza is left?

🔤 Basic algebra — laws of exponents and like terms.

Simplify each, in order. Type answers like `3b` or `b^3`:

Logarithm 🔟

$$\log_{2} 256 = \;?$$

🔓 Don't forget the second root!
$$x^2 = 49$$
$$3x + y = 10$$

What is $y$? (either value works)

⭕ The circumference of a circle of radius 7 cm is? (use $\pi = \frac{22}{7}$)

Prime count 🧮

How many prime numbers are below $30$?

Pizza night 🍕

A pizza is cut into 12 slices. Tom eats 2 and Ana eats 5.

What fraction of the pizza is left?

Pizza night 🍕

A pizza is cut into 12 slices. Tom eats 1 and Ana eats 4.

What fraction of the pizza is left?

Two-step 🪜

$$3x - 3 = 27$$

Find $x$.

🍀 Four of a kind:
$$4^x + 4^x + 4^x + 4^x = 4^{10}$$

What is $x$?

Solve for $x$ 🔍

$$3x + 12 = -6$$

🇫🇷 Révision 2nde · Compute as an irreducible fraction:

$$\frac{4}{3} - \frac{2}{3} \times \frac{5}{8}$$

Arrange 🔀

How many ways to arrange $3$ of $8$ items (order matters)?

Greatest common divisor 🔢

$$\gcd(40, 24) = \;?$$

Least common multiple 🔢

$$\text{lcm}(6, 4) = \;?$$

Logarithm 🔟

$$\log_{5} 625 = \;?$$

Pizza night 🍕

A pizza is cut into 8 slices. Tom eats 1 and Ana eats 2.

What fraction of the pizza is left?

Multiply the fractions ✖️

$$\frac{1}{6} \times \frac{1}{6} = \;?$$

Greatest common divisor 🔢

$$\gcd(9, 7) = \;?$$

Pythagoras 📐

A right triangle has legs $21$ and $20$.

Find the hypotenuse.

Flip two fair coins 🪙🪙

What is the probability of getting two heads?