Three Digit Numbers | What’s Spike Abacus?

Three digit numbers are from 100 to 999. We all know that there are 9 one-digit numbers, i.e., 1, 2, 3, 4, 5, 6, 7, 8 and 9. There are 90 two digit numbers i.e., from 10 to 99. One digit numbers are made by the digits 1, 2, 3, 4, 5, 6, 7, 8 and 9. In making two digit numbers, zero (0) can also be utilized together with digits 1 to 9. In two digit numbers one digit represents variety of ones and the opposite symbolize the variety of tens.

The digit representing ones is positioned at one’s place whereas the digit representing ten’s is positioned at ten’s place. As in 52, 5 is at ten’s place having its worth 5 × 10 = 50 and a pair of is at one’s place having it’s worth 2 × 1 = 2.

Equally, in 35, 5 is at one’s place having it’s worth 5 × 1 = 5 and three is at ten’s place having its worth 3 × 10 = 30 i.e., 35 = 30 + 5.

Within the first ten two digits numbers the digits 0, 1, 2, …. are positioned after 1 i.e., 10, 11, 12, 13, 14, 15, 16, 17, 18 and 19. Then comes 2 at ten’s place. All of the digits are positioned after 2 i.e., 21, 22, 23, 24, 25, 26, 27, 28 and 29. 

The next desk reveals the formation of two digits numbers:

Sophia has 99 beads. She makes use of 10 beads to make 1 garland. She has made 9 garlands and now she is left with 9 beads.

99 = 9 tens and 9 ones

She will get 1 extra beads from her mom. She is now capable of make one other garland of 10 beads. 

The overall variety of beads now 100.

99 and 1 extra make 100

Ninety-nine and yet one more make 100.

What comes after 99?

The quantity is 100. It’s written in phrases as 100. It
is a 3-digit quantity.

We are able to say that ninety-nine and yet one more = 100.

Utilizing tens, we are saying that 10 tens = 1 hundred.

So, after 99, the counting quantity is 100. This can be a three digit quantity. When one is added to 99, the sum is 100.

In 100, there are 10 tens or 100 ones, i.e., (100 = 10 × 10 = 100 × 1). With the assistance of ones we get tens and with the assistance of ones and tens we make the numbers of two digits, i.e., from 10 to 99.

We all know that

  One ten = ten (10)

  Two tens = twenty (20)

  Three tens = thirty (30)

  4 tens = forty (40)

  5 tens = fifty (50)

  Six tens = sixty (60)

  Seven tens = seventy (70)

  Eight tens = eighty (80)

  9 tens = ninety (90)

  Ten tens = 100 (100)

Equally, 

  1 × hundred = hundred (100)

  2 × hundred = 2 hundred (200)

  3 × hundred = 300 (300)

  4 × hundred = 4 hundred (400)

  5 × hundred = 5 hundred (500)

  6 × hundred = 600 (600)

  7 × hundred = seven hundred (700)

  8 × hundred = eight hundred (800)

  9 × hundred = 9 hundred (900)

10 × hundred = ten hundred (1000)

We see that the three digit numbers like 100, 200, 300, 400, 500, 600, 700, 800 and 900 are represented by the numerals having a digit and two zeros. This numbers are the multiples of two numbers i.e., 100 × 1, 110 × 2, 100 × 3, …….., and so forth.

However the three digit numbers are fashioned by putting the one and two digit numbers, i.e., from 1 to 99 after the basic digits 1, 2, 3, ….., 9 respectively as 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, ……., 117, 118, 119, ………, 125, 126, 127, …….., 134, 135, 136, ……….., 299, 300, 301, ….…., 400, ….…, 427, ………….and so forth.

In three digit numbers the digits are positioned at one’s, ten’s and hundred’s place. On the excessive proper of the quantity there may be one’s place, then to the left of it there may be ten’s place and to the left of it there may be hundred’s place. The digits have their place worth in a given quantity.

For instance, in 235 the place worth of 5 is 5, of three is 30 and a pair of is 200. We write this in phrases as 2 hundred thirty 5.

Allow us to kind the quantity 100 with the assistance of blocks. If we are saying one small block is 1 then a strip product of 10 small blocks will symbolize 10. A sheet product of 10 strips will present 100.

Numbers from 101 to 110

Numbers from 110 to 200

Depend and write the quantity and quantity title.

Skip Counting in A whole bunch

It’s simpler to depend bigger numbers by making teams of a whole bunch. 

Depend and write the quantity and quantity names.

The three digits numbers could simply be defined with the assistance of mathematical equipment referred to as ABACUS.

What’s spike abacus?

Spike abacus has many iron spikes on a picket base. The spikes could have globules having wholes. The spikes are named as ones, tens, a whole bunch, hundreds and so forth. respectively from excessive proper to the left.

The variety of globules within the involved spikes expresses the place worth of the digit of the quantity.

Within the given image of the abacus, there are three spikes. Within the first spike expressing ones, there are 2 globules, subsequent to it there are 3 globules and within the third spike from those’ spike there are 4 globules.

2 globules of the one’s mark, spike categorical 2 × 1 = 2, 3 globules of the tens spike categorical 3 × 10 = 30 whereas 4 globule of the third spike i.e., a whole bunch spike categorical 4 × 100 = 400. Thus, the globules positioned at completely different locations symbolize the quantity 400 + 30 + 2 = 432.

Thus, with the assistance of ‘abacus’ we will perceive the idea of three digit numbers.

Evaluate:

● A quantity has one or a couple of digit.

● To jot down the numbers we use digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

● A quantity which has single digit like 1, 2, 3, …………. 9 are referred to as one digit numbers.

● A quantity which has double digits like 22, 53, 67, …………… 99 are referred to as two digits quantity.

● A quantity which has triple digits like 100, 235, 367, …………… 999 are referred to as three digits quantity.

● To learn a two-digits quantity, first learn the tens place after which learn those place.

● To learn a 3 digits quantity, first learn the a whole bunch place, then learn the final two digits as proven under.

Questions on 3-Digit Numbers:

I. Write the numbers from 101 to 200.

II. Write the numbers from 201 to 300.

III. Write the numbers from 301 to 400.

IV. Write the numbers from 401 to 500.

V. Write the numbers from 501 to 600.

VI. Write 321 to 350:

VII. Write 581 to 610:

VIII. Fill within the blanks:

IX. Write the quick types. One has been carried out for you.

X. Write within the expanded types. One has been carried out for you.

XI. Fill within the blanks:

(i) 648 = ………… a whole bunch + ………… tens +
………… ones

(ii) 735 = ………… a whole bunch + ………… tens +
………… ones

(iii) 290 = ………… a whole bunch + ………… tens +
………… ones

(iv) 579 = ………… a whole bunch + ………… tens +
………… ones

XII. Write the quantity names:

(i) 326 –

(ii) 578 –

(iii) 729 –

(iv) 107 –

(v) 450 –

(vi) 672 –

(vii) 762 –

(viii) 985

(ix) 855 –

(x) 736 –

(xi) 244 –

(xii) 790 –

(xiii) 189 –

XIII. Write the numbers:

(i) 600 ninety two

(ii) 2 hundred thirty eight

(iii) Seven hundred twenty one

(iv) 100 forty

(v) 5 hundred twelve

(vi) 4 hundred six

(vii) Eight hundred thirty two

(viii) 5 hundred
eighty 9

(ix) 9 hundred forty seven

(x) 9 hundred ninety 9

(xi) 300 ninety eight

(xii) 2 hundred fifty three

XIV. Write the expanded kind. One has been carried out for you.

(i) 358 = Three a whole bunch and 5 tens and eight ones

(ii) 156 = ___________________________________

(iii) 653 = ___________________________________

(iv) 241 = ___________________________________

(v) 586 = ___________________________________

XV. Write in phrases. One has been carried out for you.

(i) 135 = 100 and thirty-five

(ii) 980 = ___________________________________ 

(iii) 760 = ___________________________________

(iv) 332 = ___________________________________

(v) 973 = ___________________________________

XVI. Write the numbers within the blanks. One has been carried out for you.

XVII: Fill within the lacking numbers.

XVIII. Fill within the bins with numbers earlier than, after or
between.

2nd Grade Math Apply

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