Numbers – Mathematics STD 4
Reading number up to 99,999
Read the following numbers
- 7. 843 Seven Thousand eight hundred and forty Three.
- 49, 350 Forty Nine thousand three hundred and fifty
- 99, 990 Ninety nine thousand nine hundred and ninety
- 99, 9999 Ninety Nine thousand nine hundred and ninety nine
Example. 1
Write the following numbers in words
- 48, 893
- 97, 986
Answers
- 48, 893 forty eight thousand eight hundred and ninety one
- 97, 986 – ninety seven thousand nine hundred and eighty six.
Example 2
Write the following number words in figures
- Seven teen thousand and twenty five
- Sixty six thousand six hundred and twenty five
Exercise
1. Write the following numbers in words
1. 38
2. 17, 054
3. 69, 780
4. 23, 494
5. 98, 909
6. 99, 900
7. 86, 318
8. 39, 931
9. 5, 894
10. 85, 805
2. Write the following number words in figures
i. Ten thousand, nine hundred and sixty two
ii. Seventy two thousand nine hundred and thirty seven
iii. Twenty seven thousand
iv. Twelve thousand one hundred and twenty one
v. Eighty seven thousand and thirty six
vi. Three thousand and thirteen
vii. Ninety thousand, nine hundred and ninety-nine
viii. Twenty one thousand, one hundred d and eleven
ix. Eight hundred and five
x. Eleven thousand one hundred and ten
Expanded form
Examples
1. 23, 586 20, 000 +3, 000 +500 +80 + 3
2. 7, 535 7, 000 +500 + 30 + 5
3. 98, 989 = 90, 000 + 8, 000 + 900 + 80 + 9
4. 18, 634 = 10, 000 + 8, 000 +600+ 20 + 4
Place values
Consider the number 87, 654
| Ten thousand | 8 |
| Thousands | 7 |
| Hundreds | 6 |
| Tens | 5 |
| Ones | 4 |
Examples
Write the place, values of each digits in 75, 036.
Answers
7 is in the place value of ten thousand: S is in the place value of hundreds
O is in the place value of hundreds 3 is in the place value of tens
6 is in the place value of ones
EXERCISE
1. Write the following numbers in expanded form
1. 16,894
2. 67, 983
3. 20, 503
4. 19, 191
5. 7, 500
2. Write the following in short form.
1. 50, 000 + 600 + 5
2. 90, 000 +9, 000+50 + 5
3. 7, 000 +800+ 70 + 8
4. 5 +600+100+ 40
5. 0+10,000+ 30 + 500 + 7,000
3. Write the place value, of 7 in
1. 75, 630
2. 98, 753
3. 24, 567
4. 2,070
5. 27.053
4. Write the total value of 5 in:
6. 35, 490
7. 36, 365
8. 72, 518
9. 98, 753
10. 15, 306
11. 56, 348