Multiply numbers ending in zeroes: word problems
Learn with an example
🔥 A jewellery manufacturer bought 700 boxes of gold clasps. There were 50 clasps in each box.
How many gold clasps in total did the jewellery manufacturer buy?
The jewellery manufacturer bought 700 boxes, each of which had 50 clasps. Multiply 700 by 50.
First, multiply 7 and 5.
7 × 5 = 35
Now count the zeroes in both numbers.
700 × 50 = ?
There are 3 zeroes in all. Write 3 zeroes after 35.
700 × 50 = 35,000
The jewellery manufacturer bought 35,000 gold clasps.
🔥 Baldwin bought 50 boxes of chocolates. There were 90 chocolates in each box.
How many chocolates did Baldwin buy?
There were 50 boxes, each of which had 90 chocolates. Multiply 50 by 90.
First, multiply 5 and 9.
5 × 9 = 45
Now count the zeroes in both numbers.
50 × 90 = ?
There are 2 zeroes in all. Write 2 zeroes after 45.
50 × 90 = 4,500
Baldwin bought 4,500 chocolates.
🔥 A candy factory makes 3 flavours of candy. Each day, the factory makes 4,000 pieces of each flavour of candy.
How many pieces of candy in total does the factory make each day?
The factory makes 3 flavours, and it makes 4,000 pieces of each flavour. Multiply 3 by 4,000.
First, multiply the non-zero parts of the numbers:
3 × 4 = 12
Now add back the zeroes at the end:
12,000
The factory makes 12,000 pieces of candy each day.
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