Hi Tedi,
what did you do in math today?
It might too hard for you, Dad.
Please tell.
OK.
How many pairs of numbers
make a sum less that 5?
Hey there, Let’s see –
2+1 is less than 5,
so are 0+0 and so is 1+3 –
That’s 3 pairs so far.
Here’s a hint, Dad you see
An organized list
I must insist
An organized list
Is the way to persist
OK – let’s start with 0 – 0+4 and 0+3,
0+2 and 0+1 and 0+0 are all less than 5 –
That’s 5 pairs so far,
now, let’s start with 1.
1+3 and 1+2 and then 1+1,
and 1+0 – are all less than 5.
That’s 4 more pairs,
Next, let’s start with 2, 2+2 and 2+1 and 2+0.
They are all less than 5 – hey that’s 3 more pairs.
An organized list
I must insist
An organized list
Is the way to persist |
Then, let’s start with 3 – 3+1 and 3+0 –
they are both less than 5 – hey, that’s 2 more pairs.
It’s so organized,
And there’s one more pair – 4+0.
Do you see a pattern Dad?
5 + 4 + 3 + 2 and + 1 – that’s 15 pairs, Tedi.
Your right dad how fun.
An organized list
I must insist
An organized list
Is the way to persist
You’re amazing, Dad –
are you ready for one more?
How many pairs of numbers
make a sum less that 10?
Aha! I see it. It must be
10 + 9 + 8 + 7 +6 + 5 + 4 + 3 + 2 + 1.
An organized list
I must insist
An organized list
Is the way to persist
An organized list
I must insist
An organized list
Is the way to persist |