Can you do these without a calculator?

Without using a calculator, or an abacus for that matter, can you solve these sample sums from the National Abacus and Mental Arithmetic Competition held in Dubai? Hundreds of children can do 200 in eight minutes.

How to help

Call the hotline on 0502955999 or send "thenational" to the following numbers:

2289 - Dh10

2252 - Dh50

6025 - Dh20

6027 - Dh100

6026 - Dh200

ENGLAND SQUAD

Eoin Morgan (captain), Moeen Ali, Jonny Bairstow, Sam Billings, Jos Buttler, Tom Curran, Alex Hales, Liam Plunkett, Adil Rashid, Joe Root, Jason Roy, Ben Stokes, David Willey, Chris Woakes, Mark Wood

The%20specs

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While you're here

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THE%20SPECS

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Jetour T1 specs

Engine: 2-litre turbocharged

Power: 254hp

Torque: 390Nm

Price: From Dh126,000

Available: Now

GAC GS8 Specs

Engine: 2.0-litre 4cyl turbo

Power: 248hp at 5,200rpm

Torque: 400Nm at 1,750-4,000rpm

Transmission: 8-speed auto

Fuel consumption: 9.1L/100km

On sale: Now

Price: From Dh149,900