Let’s Chant! To find Average First find Total (Add) Then Divide Given Average Find Total (Multiply) To Find Missing Value First find Total (Multiply) Then Minus
Let’s Practise To find average, first find total … 4 + 6 + 3 + 7 = 20 Then divide … Ave = 20 ÷ 4 =5
Let’s Practise Average nos. of balls =5 Given average, find total … Total nos of balls =5 x 4 = 20
Let’s Practise Average nos. of balls =5 To find missing value, first find total … Total nos of balls Then minus … 20 – 4 – 3 – 7 =5 x 4 = 20 =6
Let’s Practise To find average, first find total … 6 + 3 + 9 = 18 Then divide … Ave = 18 ÷ 3 =6
Let’s Practise Average nos. of balls =6 Given average, find total … Total nos of balls =6 x 3 = 18
Let’s Practise Average nos. of balls =6 To find missing value, first find total … Total nos of balls Then minus … 18 – 6 – 3 =6 x 3 = 18 =9
Let’s Practise To find average, first find total … 7 + 4 + 5 + 8 + 6 = 30 Then divide … Ave = 30 ÷ 5 =6
Let’s Practise Average nos. of balls =6 Given average, find total … Total nos of balls =6 x 5 = 30
Let’s Practise Average nos. of balls =6 To find missing value, first find total … Total nos of balls Then minus … 30 – 7 – 4 – 5 – 8 =6 x 5 = 30 =6 Game Time