Mental Math
Whole # / a dec.
Mult. & Div. Decimals
the value of expressions
Word problems
100

This is the product of 2.4 + 3.5

What is 5.9?

100

The product of 4 / 0.5

What is 8?

100
This is the product of 5.5 x 2

What is 11?

100

The value of 5.5 + 2 x 2

What is 9.5?

100

Adam has 3 cow eyes that weigh 0.05 kg each. How much in total do they weigh?

What is 0.15kg?

200

This is the product of 3.4 - 2.5

What is 0.9?

200

The product of 8 / 0.1

What is 80?

200

This is the product of 5.5 / 2

What is 2.75?

200

The value of (9 + 3) x 4

What is 48?

200

Jayla, Jesse, Cindy, and Isabella have 4 Nashville hoodies that they have washed for 12.5 minutes each. In total, how much time have they spent washing their hoodies?

What is 50 minutes?

300
This is the product of 0.43 + 12.9

What is 13.33?

300

The product of 25 / 0.25

What is 100?

300

This is the product of 2.4 x 3.5

What is 8.4?

300

The value of 7.3 x 2 + (4 / 2.5)

What is 16.2?

300

Ritwiz has stolen 132.5 pencils over the last 12 school days. How many pencils on average does he steal per day?

What is around 11 pencils per day?
400

This is the product of 7 - 4.12

What is 2.88?

400

The product of 15 / 0.75

What is 20?

400

This is the product of 12.5 / 0.2

What is 62.5?

400

The value of 15.19 - 3.4 x 2

What is 8.39?

400

Jonah leaves his seat on average of 32.5 times per day. Eddie leaves his seat on average of 24.8 times per day. On average, how many more times does Jonah leave his seat than Eddie?

What is 7.7 times?

500

The product of 5.2 + 0.93 - 2.1

What is 4.03?

500

This is about the product of 21 / 0.9

What is about 23?

500

This is the product of 4.4 and 0.05.

What is 0.22?

500

The value of 2.99 x (14.8 - 2.05)

What is 38.1225?

500

Hibba answers 4.6 questions per class. Dhwanit answers 7.3 questions per class. If they were awarded 1 duck for every question they answered, how many ducks would they have after 5 school days?

What is around 60 ducks?