Page 9 - Start Up Mathematics_4

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Numbers beyond 9999

Let’s Recall ...

• 10 ones = 1 ten

• 10 tens = 1 hundred
• 10 hundreds = 1 thousand

• Adding 1 to the largest 1-digit number gives the smallest 2-digit number. 9 + 1 = 10
• Adding 1 to the largest 2-digit number gives the smallest 3-digit number. 99 + 1 = 100
• Adding 1 to the largest 3-digit number gives the smallest 4-digit number. 999 + 1 = 1000

1 Write the following numbers in expanded form. Also write their number names.

(a) 2809 = + + + = ________________________________

(b) 6174 = + + + = ________________________________

(c) 9875 = + + + = ________________________________

2 Circle the largest number.

(a) 4268 4175 4628 4186 (b) 379 397 387 378

3 Write the predecessor and successor of the given numbers.

(a) 6280 (b) 2010

(c) 9979 (d) 8349

4 Complete the series.

(a) 3245; 3250; ________; ________; 3265; ________

(b) 1060; 1070; ________; 1090; ________; ________

(c) 8686; 8688; ________; ________; ________; 8696

5 Using the digits 4, 8, 0 and 7, form the largest and the smallest 4-digit numbers.

6 Put the correct sign > or <.

(a) 4683 4863 (b) 3107 3007

(c) 9819 9189 (d) 8876 8786

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