Place Value
Call out the number before the answer appears.��
When you see it ,
say it!
First look at the tens digit.
Two tens are twenty!
Next look at the units digit.
Five units are 5.
Two tens and Five units = 25
Now it’s your turn, but remember:��When you see it, SAY IT!
twenty-six 26
sixteen 16
thirty-Five 35
forty-two 42
eighty-four 84
nineteen 19
forty-one 41
thirty-seven 37
thirteen 13
twenty-one 21
thirty-nine 39
fifty-eight 58
Well Done!
You have worked hard reading two-digit numbers, now have a go at reading three-digit numbers.
Three-digit numbers have
Hundreds
and Units
Tens
Two �Hundreds
five �Tens
Eight � Units
= Two hundred and �fifty eight
Now �it’s YOUR turn.
one hundred and thirty-six 136
one hundred and twenty 120
one hundred and twenty-seven 127
one hundred and nineteen 119
one hundred and forty
one hundred and seven�107
Once you know place value, you will find partitioning numbers a lot easier.
Wilf: to begin to remember number bonds for 10
If you can remember number bonds for 10, it makes + and - subtracting easier
I can tell you 2 numbers that total 10
Counting in Tens
Making 10
10
+
0
9
+
1
8
+
2
7
+
3
6
+
4
5
+
5
4
+
6
3
+
7
2
+
8
1
+
9
0
+
10
Making 10�let us revise
0
+
10
=
10
1
+
9
=
10
2
+
8
=
10
3
+
7
=
10
4
+
6
=
10
5
+
5
=
10
6
+
4
=
10
7
+
3
=
10
8
+
2
=
10
9
+
1
=
10
10
+
0
=
10
How many bundles this man has made ?
How many more bundles this man can make ?
How many packets of 10 pencils?
Can you add more than 2 numbers ?
Find the total
4 + 2 + 6 =
8 + 2 + 2 =
3 + 1 + 9 =
Wilf: to begin to add more than 2 numbers, looking for number bonds to 10 first
I can find number bonds to 10 before I add the other number.
If you can remember number bonds for 10, it makes + and - subtracting easier
Find the total
4 + 2 + 6 =
8 + 2 + 2 =
+
7
=
+
5
3
Wilf: to begin to add more than 2 numbers, looking for number bonds to 10 first
I can find number bonds to 10 before I add the other number.
If you can remember number bonds for 10, it makes + and - subtracting easier
Number bonds for 10
5 + 5 5 + 5
4 + 6 6 + 4
3+ 7 7 + 3
2 + 8 8 + 2
1 + 9 9 + 1
Can you do it?
4 + 2 + 6 =
8 + 2 + 2 =
3 + 1 + 9 =
Wilf: to begin to add more than 2 numbers, looking for number bonds to 10 first
I can find number bonds to 10 before I add the other number.