Page 15 - Maths 1
P. 15
2. a) a …..-...... a = 0 ( a number minus itself equals 0 )
b) a .....x.... a = 1 ( a number, 1, times itself equals 1 )
c) a .....+.....a = 2a ( a number, 1, plus itself equals 2 times itself )
d) a .....x....a = ( any number, times itself equals the number squared )
[2].
3. a) 3 − 5 = 31 add 5 to both sides of the equation
3 -5 + 5 = 31 + 5
3 + 0 = 36 divide both sides by 3
3 ÷ 3 = 36 3÷
= 12
b) 5 − 2 = 2 − 8 add 2 to both sides of the equation
5 - 2 + 2 = 2 - 8 + 2
5 + 0 = 2 - 6 subtract 2 from both sides
5 + 0 - 2 = 2 - 2 - 6
5 - 2 = 0 - 6
3 = -6 divide both sides by 3
3 ÷ 3 = - 6 3÷
= - 2 [2]