Page 10 - Start Up Mathematics_3
P. 10
6 Write in expanded form.
(a) 538 = + + (b) 906 = + +
7 Write the number that comes before, after or between.
(a) _____ 399 (b) 870 ______ (c) 471 ______ 473
4-Digit Numbers
999 is the greatest 3-digit number. Let’s see what happens when we add one more to it.
+
one more
9 hundreds (900) + 10 tens (100) = 1 thousand (1000)
10 hundreds = 1 thousand
So, 999 + 1 = 1000
We get 1000 which is the smallest 4-digit number. Quick Tip
Observe the following pattern. If 1 is added to the
largest number in
On adding 1 to the largest 1-digit number, we get the series, we get the
the smallest 2-digit number. smallest number of the
9 + 1 = 10 next series.
2
