To decide whether a given number is even or odd, we look at the ones place. If the digit
in the ones place is 0, 2, 4, 6 or 8, then the number is an even number. If the digit in
the ones place is 1, 3, 5, 7 or 9, then the number is an odd number.
EXERCISE 1.5
1. Round o the following numbers to the nearest 10.
(a) 63
(b) 922
(c) 35
2. Round o the following numbers to the nearest 100.
(a) 586
(b) 354
(c) 1177
3. Round o the following numbers to the nearest 1000.
(a) 6119
(b) 7999
(c) 2534
4. Match the following.
Number
Rounded o to the nearest 10
(a) 94
(i) 50
(b) 11
(ii) 100
(c) 46
(iii) 70
(d) 68
(iv) 10
(e) 95
(v) 90
5. Separate and write the even and odd numbers into their respective boxes.
46
83
175
220
1643
2040
9891
687
1849
7514
6322
9295
5040
4783
Even numbers
Odd numbers
LET’S EVALUATE
1. Observe the pictorial blocks and write the numbers they represent.
(a)
+
+
+
= ___________
18