Whole Numbers 1

Whole numbers are the basic counting numbers 0, 1, 2, 3, 4, 5, 6 and so on. In P3, we learn numbers up to 10 000.

In this article, the learning objectives are:

1. Reading and writing numbers up to 10 000
2. Comparing and ordering numbers

1. Reading and writing numbers up to 10 000

When writing numbers more than 1000 in words, we need to add a comma to separate the hundreds from the thousands.

Question 1:

Write the following in words. 

1508

Answer:

One thousand, five hundred and eight

Question 2: 

Write the following in words. 

3520

Answer:

Three thousand, five hundred and twenty

Question 3: 

Write the following in words. 

7845

Answer:

Seven thousand, eight hundred and forty-five

Question 4:

Write the following in words.

10 000

Answer:

Ten thousand

Question 5:

Write the following in numerals.

Six thousand, five hundred and nineteen

1. 6519
2. 6590
3. 6591
4. 5619

Answer:

(1) 6519

Question 6:

Write the following in numerals.

Two thousand and seventy-five

1. 2750
2. 2705
3. 2275
4. 2075

Answer:

(4) 2075

Question 7:

Write the following in numerals.

Four thousand and nine

1. 409
2. 4009
3. 4090
4. 4900

Answer:

(2) 4009

Question 8: 

Write the following in numerals.

Five thousand, four hundred and eleven

Answer:

5411

Question 9:

Write the following in numerals.

Nine thousand, two hundred and five

Answer:

9205

Question 10:

Which of the following has the same value as the words written below?

Nine thousand, one hundred and thirteen

1. 9000 \(+\) 10 \(+\) 13
2. 9000 \(+\) 100 \(+\) 13
3. 9000 \(+\) 10 \(+\) 30
4. 9000 \(+\) 100 \(+\) 130

Solution:

9000 \(+\) 100 \(+\) 13 \(=\) 9113

Answer:

(2) 9000 \(+\) 100 \(+\) 13

2. Comparing And Ordering Numbers

When we compare numbers, we will compare the digits from the left to the right.

The greater the digit on the “left”, the greater the number.

Question 1:

Let’s take a look at the following numbers:

Which number is greater?

Solution:

The digit in the thousands place of both numbers is 2.
Since they are the same, we look at the digit in the hundreds place.

The digit in the hundreds place of both numbers is different. We compare them.
Since 9 is greater than 5, 2950 is greater than 2590.

Answer:

2950

Question 2:

Which of the following is the greatest?

1. 6710
2. 2375
3. 4097
4. 1684

Solution:

By comparing the digits in the thousands place for all the numbers, 6 is the greatest.
Hence, 6710 is the greatest number.

Answer:

(1) 6710

Question 3:

Which of the following is the smallest?

1. 7835
2. 1089
3. 2550
4. 4872

Solution:

By comparing the digits in the thousands place for all the numbers, 1 is the smallest.
Hence, 1089 is the smallest number.

Answer:

(2) 1089

Question 4:

Which of the following is the greatest?

1. 5760
2. 5670
3. 6750
4. 6570

Solution:

By comparing the digits in the thousands place for all the numbers, 6 is greater than 5.
Hence, we compare 6750 and 6570.

By comparing the digits in the hundreds place for 6750 and 6570, 7 is greater than 5.
Hence, 6750 is the greatest number.

Answer:

(3) 6750

Question 5:

Which of the following is the smallest?

1. 2323
2. 2332
3. 3232
4. 3223

Solution:

By comparing the digits in the thousands place for all the numbers, 2 is smaller than 3.
Hence, we compare 2323 and 2332.

The digit in the hundreds place for 2323 and 2332 is the same.

By comparing the digits in the tens place for 2323 and 2332, 2 is smaller than 3.
Hence, 2323 is the smallest number.

Answer:

(1) 2323

Question 6:

Arrange the following numbers in order, starting with the smallest.

Solution:

Question 7: 

Arrange the following numbers in order, starting with the greatest.

Solution:

Question 8: 

Arrange the following numbers in order, starting with the smallest.

Solution:

Question 9: 

Arrange the following numbers in order, starting with the greatest.

Solution: 

Question 10: 

Arrange the following numbers in order, starting with the smallest.

Solution:

Question 11: 

Arrange the following numbers in order, starting with the greatest.

Solution:

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