Snoot and Fin rearrange numbers and make number bonds when adding moons.
NARRATOR: Hello Snoot.
Hello Fin.
Where are you off to in a flying saucer?
SNOOT: (ALIEN LANGUAGE)
NARRATOR: The planet Glitteron!
Why are you going there?
SNOOT: (ALIEN LANGUAGE)
NARRATOR: I see, you鈥檙e going to check out its famous moons.
Oh my!
What a beautiful planet and what a lot of lovely moons.
How many are there all together?
SNOOT: 贰谤鈥i鈥 Oo鈥
NARRATOR: Let鈥檚 see.
There are 3 big shimmery moons, 5 medium glimmery moons and 7 little glittery moons.
FIN: (ALIEN LANGUAGE)
NARRATOR: Great idea, Fin.
Instead of working out 3 add 5 add 7, you can start by doing 7 add 3, which equals 10.
Then just add the 5 left over.
10 add 5 makes 15 moons all together.
BOTH: Aha!
NARRATOR: Back on earth, that鈥檚 what we call making number bonds to 10.
Instead of adding up numbers in the order they come in, it鈥檚 sometimes easier to add numbers to make 10 first, and then add on what鈥檚 left over.
SNOOT: (ALIEN LANGUAGE)
NARRATOR: What鈥檚 that Snoot?
Even more little moons?!
SNOOT: (ALIEN LANGUAGE)
NARRATOR: What do you mean they're getting bigger?
贰谤鈥
I don鈥檛 think those are moons鈥
They鈥檙e meteors!
And they鈥檙e coming right for us!
(LOUD WHOOSH)
How can you make adding lots of numbers easier?
If you have to add three or more numbers it can help to use number bonds.
Number bonds are pairs of numbers that you already know make another number.
You probably already know some number bonds to 10, like these.
- 1 + 9 = 10
- 2 + 8 = 10
- 3 + 7 = 10
- 4 + 6 = 10
- 5 + 5 = 10
If you can spot these in a sum, try adding these first before adding the other numbers.
Which order should I add numbers in? video
Snoot and Fin count spaceships from the space station.
Snoot and Fin partition numbers into tens and units to help count plants in their garden.
Find more 1st Level resources from 91热爆 Bitesize
First Level is a stage of Scotland鈥檚 Curriculum for Excellence.
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