Multiply numbers ending in zeroes: word problems
Learn with an example
Mary bought 8 packs of pencils. Each pack contains 24 pencils. How many pencils did Mary buy in total?
Solution:
Step 1: Understand the Problem:
- Mary bought 8 packs of pencils.
- Each pack contains 24 pencils.
- We need to find out how many pencils Mary bought in total.
Step 2: Plan the Solution:
- We will multiply the number of packs by the number of pencils per pack.
Step 3: Perform the Calculation:
Total number of pencils = Number of packs×Pencils per pack
8×24 =192=192
Step 4: Verify the Solution:
- To verify, we can divide the total number of pencils (192) by the number of packs (8) and see if we get the number of pencils per pack (24).
Step 5: State the Solution:
- Mary bought a total of 192 pencils.
🗼 There are 20 flowers on each quilt.
How many flowers are there on 700 quilts?
There are 20 flowers on each of the 700 quilts. Multiply 20 by 700.
First, multiply 2 and 7.
2 × 7 = 14
Now count the zeroes in both numbers.
20 × 700 = ?
There are 3 zeroes in all. Write 3 zeroes after 14.
20 × 700 = 14,000
There are 14,000 flowers in all on 700 quilts.
🗼 An airline carries 7,000 passengers per day.
How many passengers will the airline carry in 8 days?
The airline carries 7,000 passengers per day for 8 days. Multiply 7,000 by 8.
First, multiply the non-zero parts of the numbers:
7 × 8 = 56
Now add back the zeroes at the end:
56,000
The airline will carry 56,000 passengers in 8 days.
Let’s practice!🖊️
