4=4. 8, 12, 15, 20, 24, 28, 32 36,40 5=5, 10, 15, 20, 25, 30, 35,40 a) 40 6=6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 7278, 84. 90, 96, 102, 108, 114, 120, 126, 132, 138, 144 11=11, 22, 33, 44, 55, 66, 77, 88, 99, 110, 121, 132, 133, 144 b= 144 c) 9 - 5=4 d)9 x 5=45 y 5 x 9=45 e) 3 x 10= 30 x 2=60