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 couple 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 whole variety of beads now 100.

99 and 1 extra make 100

Ninety-nine and another make 100.

After 99, the counting quantity is 100. It is 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 many others.

However the three digit numbers are shaped by inserting 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 many others.

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’s one’s place, then to the left of it there’s ten’s place and to the left of it there’s 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 couple of is 200. We write this in phrases as 2 hundred thirty 5.

Allow us to type 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.

One block

10 blocks is 1 tan

10 strips of 10 blocks every is 100

Numbers from 101 to 110

H 1

T 0

O 1

101

100 one

H 1

T 0

O 2

102

100 two

H 1

T 0

O 3

103

100 three

H 1

T 0

O 4

104

100 4

H 1

T 0

O 5

105

100 5

H 1

T 0

O 6

106

100 six

H 1

T 0

O 7

107

100 seven

H 1

T 0

O 8

108

100 eight

H 1

T 0

O 9

109

100 9

H 1

T 1

O 0

110

100 ten

Numbers from 110 to 200

	110	100 ten
	120	100 twenty
	130	100 thirty
	140	100 forty
	150	100 fifty
	160	100 sixty
	170	100 seventy
	180	100 eighty
	190	100 ninety
	200	2 hundred

Rely and write the quantity and quantity title.

	117	100 seventeen
	128	100 twenty-eight
	135	100 thirty-five
	144	100 forty-four
	156	100 fifty-six
	167	100 sixty-seven
	172	100 seventy-two
	181	100 eighty-one
	194	100 ninety-four
	199	100 ninety-nine

Skip Counting in Lots of

It’s simpler to depend bigger numbers by making teams of lots of. 

	100	100
	200	2 hundred
	300	300
	400	4 hundred
	500	5 hundred
	600	600
	700	Seven hundred
	800	Eight hundred
	900	9 hundred

Rely and write the quantity and quantity names.

	910	9 hundred ten
	920	9 hundred twenty
	930	9 hundred thirty
	940	9 hundred forty
	950	9 hundred fifty
	960	9 hundred sixty
	970	9 hundred seventy
	980	9 hundred eighty
	990	9 hundred ninety
	999	9 hundred ninety-nine

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

What’s spike abacus?

Spike abacus has many iron spikes on a wood base. The spikes could have globules having wholes. The spikes are named as ones, tens, lots of, hundreds and many others. 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., lots of 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.

Evaluation:

● A quantity has one or multiple 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 known as one digit numbers.

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

● A quantity which has triple digits like 100, 235, 367, …………… 999 are known 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 lots of place, then learn the final two digits as proven beneath.

I. Write 321 to 350:

II. Write 581 to 610:

III. Fill within the blanks:

IV. Write the brief varieties. One has been performed for you.

V. Write within the expanded varieties. One has been performed for you.

VI. Fill within the blanks:

(i) 648 = ………… lots of + ………… tens +
………… ones

(ii) 735 = ………… lots of + ………… tens +
………… ones

(iii) 290 = ………… lots of + ………… tens +
………… ones

(iv) 579 = ………… lots of + ………… tens +
………… ones

VII. 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 –

VIII. 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

2nd Grade Math Apply

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