Would you rather?
Number sense
Mental math
Which one doesn't belong?
Challenge
100

Would you rather have 50¢ or 0.75 of a dollar?

0.75 of a dollar

100

What is the value of the digit 7 in 47,325?

7,000

100

25 + 75 = ?

100

100

2, 4, 6, 9

9 — it's the only odd number.

100

I am thinking of a number.

When you multiply me by 5, you get 45.

What number am I?

9

200

Would you rather have 3 groups of 8 or 2 groups of 12?

2 groups of 12

200

Which is greater? 0.7 or 0.67

0.7

200

50 × 6 = ?

300

200

0.5, 1/2, 50%, 0.05

0.05

The first three are all equal to 1/2.

200

There are 24 students in a class.

They are split equally into 4 groups.

How many students are in each group?

6

300

Would you rather have 1/2 of 20 or 1/4 of 40?

They are equal-both are 10.

300

Put these numbers in order from least to greatest:

0.5, 0.05, 0.55, 0.505

0.05, 0.5, 0.505, 0.55

300

125 + 99 = ?

224

300

12, 18, 24, 25

25 — it's the only number not divisible by 6.

300

A rectangle has a length of 8 units and a width of 5 units.

What is its perimeter?

26 units

400

Would you rather receive 25% of $40 or 1/5 of $40?

They are equal — both are $10.

400

Which is closer to 500?

487 or 523

487

400

25 × 16 = ?

400

400

3/4, 0.75, 75%, 0.075

 0.075

The first three are equivalent.

400

You have $20.

You spend $7.50.

How much money do you have left?

$12.50

500

Would you rather have 0.6 of 100 or 3/5 of 100?

They are equal- both are 60.

500

A number is between 300 and 400. It has a 6 in the tens place and a 4 in the ones place.

What is the number?

364

500

What is 999 + 99?

1098

500

16, 25, 36, 48

48 — it's the only number that is NOT a perfect square. 

500

I'm thinking of a number.

  • I am greater than 20.
  • I am less than 50.
  • I am divisible by 3.
  • I am an even number.
  • My digits add up to 9.

What number am I?

36

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