Packaging Books

The video tutorial explains how Amy, who works at a bookshop, can pack 320 books into packages of 10 using repeated subtraction. Initially, subtracting 10 repeatedly is shown to be cumbersome, requiring 32 subtractions. The tutorial then demonstrates a more efficient method by subtracting larger multiples of 10, such as 100, to reduce the number of steps. This approach results in 32 packages with no remainder. The lesson concludes by highlighting the concept of finding quotients and remainders through repeated subtraction of multiples of 10.

How many books are in each package that Amy is preparing?

• 5 books

• 10 books

• 15 books

• 20 books

What is the total number of subtractions needed if Amy subtracts 10 books at a time from 320?

• 24 subtractions

• 16 subtractions

• 40 subtractions

• 32 subtractions

What is the benefit of subtracting larger multiples of 10, like 100, instead of just 10?

• It increases the number of packages

• It reduces the number of subtractions and potential errors

• It makes the process more complicated

• It decreases the number of books

After subtracting 100 books three times, how many books are left?

• 120 books

• 80 books

• 50 books

• 20 books

What is the final number of packages Amy can prepare from 320 books?

• 32 packages

• 30 packages

• 34 packages

• 36 packages