# How many tens and hundreds

```How many tens and hundreds
I am learning how many hundreds there are in numbers over
1000.
\$100
\$100
\$100
\$100
=
\$100
\$100
\$100
\$100
\$100
\$100
\$1000
We know how many \$100 notes there are in \$1000. There’s ten.
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$100
\$1000
\$1000
\$1000
\$1000
We can use this to work out how
many hundred dollar notes there
are in \$2000. \$2000 is twice as big
as \$1000 so there must be twice as
many \$100 notes (twenty \$100
notes). Let’s check.
See the pattern? How many \$100
notes must there be in \$4000?
That’s right. There are forty \$100
notes in \$1000
A cricket club wants to buy some more bats. Each bat costs \$100.
They have \$3542 to spend. How many bats can they buy?
Step1: We need to find out how many hundred dollar notes there are
in \$3542. First lets put \$3542 in houses.
Thousands
Hundreds
Tens
Ones
3
5
4
2
Step 2: How many \$100 notes are there in \$3000?
30
Step 3: How many \$100 notes are there in the hundreds
column?
5
Step 4: We don’t need to worry about the numbers in the
ones and tens column because they are less than \$100
Step 5: Add up how many hundred dollar notes you found. 30 + 5 = 35.
This is how many bats they can buy.
A large business wants to buy some new desks. The desks cost
\$100. They have \$6304. How many desks can they buy?
Try doing this example in your head.
Step1: How many hundreds are there in \$6000?
60
Step 2: How many \$100 notes are there in the
hundreds column?
3
Step 3: Do we need to worry about the numbers in the ones
and tens column? No, they are less than \$100.
Step 4: Add up how many hundred dollar notes you found.
60 + 3 = 63
Now try these questions on your own.
How many hundreds are there in the numbers below.
1) 8307
80 + 3 = 83
2) 2496
20 + 4 = 24
3) 5384
50 + 3 = 53
4) 2175
20 + 1 = 21
5) 7041
70 + 0 = 70
Click again when you have
completed each question and
the answer will be displayed.
Need some more practise? Try Pg47 of Teacher Tools Addition and
Subtraction Book Numeracy resources
```
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