Question

A box has 10 erasers. If a carton can hold 10 such boxes, how many erasers are there in 10 cartons? Woody distributes 500 erasers in a school. How many cartons of erasers are left?

• A. 100 erasers, 5 cartons are left.
• B. 1000 erasers, 5 cartons are left.
• C. 10 erasers, 6 cartons are left.
• D. 1000 erasers, 1 carton is left.

Answer 1

The correct option is B 1000 erasers, 5 cartons are left.

We know that 10 tens = 1 hundred

Number of erasers in 10 boxes = 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 = 100

Number of erasers in a carton = 100

Number of erasers in 10 cartons
= 100 + 100 + 100 + 100 + 100 + 100 + 100 + 100 + 100 + 100 = 1000

Number of erasers distributed by Woody in a school = 500

We know that 1 hundred = 10 tens = 100 ones
500 erasers = 50 boxes = 5 cartons

So, 5 cartons of erasers were distributed by Woody in the school.

Number of cartons left = 10 – 5 = 5 cartons