Page 19 - Start Up Mathematics_3

Ordering of Numbers

We can arrange numbers in a sequence from smaller Mental Maths

to bigger or from bigger to smaller.
Is 4271, 4281, 4396,
Writing numbers in order from smaller to bigger is 4402 an ascending or
called ascending order and from bigger to smaller is descending sequence?
called descending order.

• 6089, 6190, 7191, 8792 are in ascending order.

• 9791, 8790, 7787, 4688 are in descending order.

EXERCISE 1.3

1. Put the correct sign <, > or =.

(a) 237 1201 (b) 3645 98 (c) 5421 5412

(d) 9781 9871 (e) 1212 1212 (f) 8064 7065

2. Arrange the following in ascending order.

(a) 3285, 4061, 298, 3469 , , ,

(b) 1892, 1982, 1289, 1189 , , ,

(c) 9099, 9909, 9990, 999 , , ,

(d) 6341, 6143, 6431, 6314 , , ,

3. Arrange the following in descending order.

(a) 7649, 7496, 7549, 7459 , , ,

(b) 8291, 8192, 8091, 8129 , , ,

(c) 1123, 1312, 1213, 1321 , , ,

(d) 4523, 5619, 4807, 5032 , , ,

4. Write the number that comes between the given numbers.

(a) 698, , 700 (b) 4039, , 4041

(c) 1287, , 1289 (d) 8500, , 8502

11