P.5 PATTERNS AND SEQUENCES

multiple of three. 3112 is even. Therefore 3112 is exactly divisible by two. 1123 not even. a) 345 and 654 A number is exactly disable by two when it is even i.e. when its last 1 | P a g e ii) Divisibility test for three. A number is exactly divisible by 3 when the sum of its digit is a b) 1123 and 3112 digit is 0, 2, 4, 6 or 8. i) Divisibility test for two. Divisibility test 654 is an even number. Divisibility test for two and three. Divisibility test is the quicker way of finding out whether a number is Examples 345 is not an even number. exactly divisible by another number or not. two? Therefore 654 is exactly divisible by two. 1. Without dividing, which of the two numbers is exactly divisible by PATTERNS AND SEQUENCES a) 34 b) 51 c) 690, c) 755, d) 2348 1. Which of the following numbers are exactly divisible by two? Which of the following numbers 234 and 632 is exactly divisible by 9 is a multiple of three. Divisibility test for four. Divisibility for 4, 5 and 10 Sum off digits = 2 + 3 + 4 234 2 | P a g e 234 is exactly divisible by 3. its last three digits is a multiple of 4. Example = 9 632 Sum of digits = 6 + 3 + 2 = 11 11 is not a multiple of three. 632 is not exactly divisible by three three? the list below. Activity A number is exactly divisible by four when the number formed by 3. Without dividing identify the numbers which are exactly divisible 2. Identify all the numbers which are exactly divisible by three in by two and three in the list below. 237, 762, 651 and