Hundreds
Power of the Mind
Decomplicating
How much and how long
Organising Chaos
100

How much is 10% of 670?

Is it 67?

100

How much is 37 + 97?

Is it 134?

100

Simplify 12/18.

Is it 2/3?

100

How much time is from 11:00am to 3:00pm?

Is it 4 hours?

100

Find the median: 3, 6, 1, 12, 5, 6, 7

Is it 6?

200

How much is 20% of 450?

Is it 90?

200

How much is 654 + 93?

Is it 747?

200

Simplify 12/42

Is it 2/7?

200

How much time is from 3:45pm to 9:52pm?

Is it 6 hours and 7 minutes?

200

Find the mode: 12, 12, 4, 5, 2, 9, 5, 3, 2

Is it 2, 5 and 12?

300

How much is 25% of 1400?

Is it 350?

300

How much is 234 - 73?

Is it 161?

300

Simplify 60/450.

Is it 2/15?

300

How much time is from 4:52pm to 11:00pm?

Is it 6 hours and 8 minutes?

300

Find the mean: 1, 6, 3, 9, 10, 2, 4

Is it 5?

400

How much is 95% of 1800?

Is it 1710?

400

How much is 464 divided by 4?

Is it 116?

400

Add and simplify: 4/9 + 8/9

Is it 4/3?

400

Michael makes 30 pounds per hour and works from 8:30am to 4:00pm.

How much money does he make?

Is it 225 pounds?

400

The mode is the most frequent value. Explain all exceptions/possible cases of this.

Most frequent value, 

or most frequent values, 

or no mode if no value is more frequent.

500

How much is 16% of 50?

Is it 8?

500

How much is 32 times 12?

Is it 384?

500

Add and simplify: 16/3 + 10/5.

Is it 22/3?

500

Juliet makes 36 pounds per hour on the weekend, and works 8 hours on Saturday and 6 hours and 45 minutes on Sunday. How much money does she make?

Is it 531 pounds?

500

The median is the central value. Explain clearly all exceptions/possible cases of this.

Central value if number of elements is odd,

Mid-value between central values if number of elements is even,

If both central values are equal, it is that value.