A dragon has 5 × 10⁴ + 3 × 10¹ gold coins. How many coins is that?
50 030
Your alarm rings every 8 minutes, and your brother's alarm rings every 12 minutes. Both ring together at 6:00 a.m. When do they next ring together?
6:24 a.m.
A pirate has 48 gold coins and 72 silver coins. She shares them into identical treasure chests with nothing left over. What is the greatest number of chests she can fill?
24
A blue whale weighs about 10⁵ kg and a cat weighs about 10 kg. How many times heavier is the whale?
10 000
A flea jumps 0.06951 m. Round this to 3 decimal places.
0.070
Bubble tea costs $b and one cake costs $5. Four friends each buy one bubble tea and two cakes. Write an expression for the total cost.
4(b + 10)
Zombies can only enter the haunted house if they are under 120 cm tall. Which inequality shows a zombie height, h, that can go in?
h < 120
A dog walker charges $5 to start, plus $3 for every dog. Write a formula for the cost, C, of walking d dogs.
3d + 5
Bao says 7y − 7y = y. What is the correct answer?
0
F = 9C/5 + 32. Hanoi reaches 35 °C. What is the temperature in °F?
95
Work out a² − 3ab when a = −2 and b = 5.
34
A submarine is at −45 m. It rises 18 m, then dives 30 m. Where is it now?
−57 m
You stack 10³ pancakes, and each one is 0.6 cm thick. How tall is the tower?
600 cm
A 4250 g pizza is shared equally between 10² hungry students. How much does each student get?
42.5 g
A cube-shaped magic box has a volume of 216 cm³. How long is one edge?
6 cm
