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VIDEO TẠI ĐÂY
Starry, are you
getting ready for your first day at school.
So many books to
cover, come, let me help!
These books have 25
pages each and these have 50 pages.
You look worry, you
can’t find the book with 90 pages. It’s right here , Starry.
Look, 9 and 0, 90. Oh,
you haven’t learnt the number 90 yet.n-i-n-e-t-y, Starry, 90.
Now let me explain the
number 90 to you.
Each pile of book has
10 books in it. That ten+ ten+ten+ten+ten+ten+ten+ten+ten, 9 tens, 90 books.
Starry, suppose we add
a single book to these piles of books. We get 9 tens 1, which is 91, n-i-n-e-t-y
o-n-e.
On adding 2 books, we
get 9 tens 2 that’s 92, n-i-n-e-t-y t-w-o, 92.
When 1-2-3 books are
added Starry to the 9 piles of books, it forms 9 tens 3, which is the number 93,
n-i-n-e-t-y t-h-r-e-e, 93.
Now 9 tens plus 4
books gives us 9 tens 4, which is the number 94, n-i-n-e-t-y f-o-u-r.
And 9 piles of books plus 5 books is 9 tens 5 which forms the number 95, n-i-n-e-t-y f-i-v-e, 95.
When we add 1 more
book, we get 9 piles of books plus 1-2-3-4-5-6 books that 9 tens 6, which is the
number 96, n-i-n-e-t-y s-i-x, 96.
Now 9 piles of books
plus 1-2-3-4-5-6-7 books is 9 tens 7, that is the number 97,
n-i-n-e-t-y s-e-v-e-n, 97.
Starry, here are 9
piles of books plus 8 single book that’s 9 tens 8, 98, n-i-n-e-t-y e-i-g-h-t,
98.
And 9 piles of books
and 9 single books is 9 tens 9, 99, n-i-n-e-t-y n-i-n-e, 99.
Starry, let’s count
the numbers in the ascending order from 90 to 99. That’s
90-91-92-93-94-95-96-97-98-99.
And in the descending
order 99-98-97-96-95-94-93-92-91-90.
Now let’s do an
activity together!
Identify the numbers
and write the number names.
9 and 3, 93,
n-i-n-e-t-y t-h-r-e-e
9 and 8, 98,
n-i-n-e-t-y e-i-g-h-t
9 and 2, 92,
n-i-n-e-t-y t-w-o
9 and 7, 97,
n-i-n-e-t-y s-e-v-e-n
9 and 9, 99,
n-i-n-e-t-y
n-i-n-e
9 and 0, 90,
n-i-n-e-t-y
And in this activity
Starry, the numbers are all jumble up.
We have to first put
them to the correct in the ascending order from the smallest to the biggest,
and then in the descending order from the biggest to the smallest.
Shall we begin!
The first number is 9
and 0, 90 then we have 91-92-93-94 next 95-96-97-98 and lastly 99.
And now Starry, in the
descending order 99-98-97-96-95-94-93-92-91 and 9 and 0, 90.
Starry, if you see the
number 9 and 0 anywhere, remember it stands for the number 90.
The numbers that
follow are 91-92-93-94-95-96-97-98 and 99.
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