Quiz for 13 year olds with answers

−9 → −8 → 2 → 10. The further below zero, the smaller the number, so −9 is the smallest here.

True. Find 1/3 first: 27 ÷ 3 = 9. Then 2 lots of 9 make 18.

4.04. Line up the decimal points: 1.60 + 2.44 = 4.04.

5.82. Line up the decimal points: 4.10 + 1.72 = 5.82.

False. 389 + 330 = 719. Hundreds, tens, then ones: 300 + 300 = 600, 80 + 30 = 110, 9 + 0 = 9. Altogether: 719.

12. Think backwards: 12 × 13 = 156, so 156 ÷ 13 = 12.

False. 26 × 11 = 286. 26 × 11 is 26 × 10 plus 26 × 1: 260 + 26 = 286.

272. 16 × 17 is 16 × 10 plus 16 × 7: 160 + 112 = 272.

54. 10% of 360 is 36 and 5% is half that, 18. Together: 54.

False. It's Hanoi. Vietnam grows more coffee than any country except Brazil.

Sucre. Sucre is the constitutional capital. The government sits in La Paz, so both count.

True or false: This is the flag of Latvia.

True. It's Latvia. Latvia's red is darker and its white stripe is thinner.

False. It's Khartoum. Sudan has more ancient pyramids than Egypt.

Europe. Albania faces Italy across the Adriatic and Ionian seas.

Terracotta Army → Machu Picchu → Brandenburg Gate → Sydney Opera House. Oldest first: Terracotta Army (about 210 BC), Machu Picchu (about 1450), Brandenburg Gate (1791), Sydney Opera House (1973).

Ireland → Belgium → Croatia → Ukraine. The island of Ireland is shared by two countries: Ireland and the UK.

Which country's flag is this?

• San Marino
• Spain
• Estonia
• Monaco

San Marino. San Marino says it is the oldest republic in the world, founded in the year 301.

Kuwait City. Kuwait has no rivers or lakes. Most of its fresh water is made by taking the salt out of seawater.

Lead. Romans made water pipes from lead, and plumbers are named after it. Pb comes from the Latin plumbum.

Ag. Silver carries electricity better than any other metal. Ag comes from the Latin argentum.

Venus. Venus is often called the Morning Star or the Evening Star, even though it is a planet.

True. Floating in orbit, their spines stretch out by a few centimetres. They shrink back on Earth.

False. The far side gets just as much sunlight as the side we see. We just never see it from Earth.

Microraptor → Coelophysis → Ankylosaurus → Argentinosaurus. Argentinosaurus weighed as much as several elephants. Microraptor weighed less than a big dog.

Pluto → The Moon → Mars → Earth → Jupiter. Pluto is only about two thirds as wide as our Moon.

Magnesium. Burning magnesium is so bright that you should never look straight at it.

Invertebrate. Insects, spiders, worms, snails and jellyfish are invertebrates. Most kinds of animal are.

Marsupial. Kangaroos, koalas and wombats are marsupials.

Hubble. Hubble orbits high above the wobbly air that blurs the view from telescopes on the ground.

Coprolite. Coprolites show what animals ate. One giant one, probably from a T. rex, is packed with crunched-up bone.

Vesuvius buries Pompeii (AD 79) → Columbus reaches the Americas (1492) → Slavery Abolition Act passed (1833) → First public TV demonstration (1926) → First person in space (1961). Vesuvius buried Pompeii in AD 79. The ash kept the Roman town so well preserved that you can still walk its streets today.

True. It was 1588. About 130 Spanish ships set out to invade England. Storms and English fireships scattered them.

First satellite launched. Sputnik 1 was about the size of a beach ball and beeped as it circled the Earth.

Battle of Agincourt. The Battle of Agincourt was fought in 1415, 94 years before Henry VIII became king.

False. The plot was led by Robert Catesby. Guy Fawkes was the one caught guarding the gunpowder.

True. It was saved partly because it was so useful for sending radio signals.

1st century AD. The Roman conquest of Britain began in AD 43, which is in the 1st century AD.

True. Cześć is hello in Polish. Cześć is for friends. To be polite, Polish speakers say dzień dobry, which means good day.

temperature. Temperature has an er you might skip: temp, er, a, ture.

Xièxie (谢谢). Xièxie is the same character written twice, a little like saying thanks thanks.

neighbour. Neighbour has eigh, like eight and weigh, and ends in our.

practice. Practice with a c is the noun in British English, just like advice.

Russian. Zdravstvuyte is the polite Russian hello. The first v is silent, which helps a little.

opportunity. Opportunity has port in the middle. It comes from Latin for heading towards a harbour.

False. Olá is hello in Portuguese. Olá is hello in Portuguese. In Brazil, friends often just say oi.