Question

Express the following decimal numbers in an expanded form and place value grid form. 

(i) 56.78 

(ii) 123.32 

(iii) 354.56

Answer 1

(i) 56.78

(a) Expanded form 

56.78 = 5 x 10¹ + 6 x 10⁰ + 7 x 10^-1 + 8 x 10^-2 

(b) Place value grid

(ii) 123.32 

(a) Expanded form 

123.32 = 1 x 10² + 2 x 10¹ + 3 x 10⁰ + 3 x 10^-1 + 2 x 10^-2 

(b) Place value grid

(iii) 354.56 

(a) Expande form 

354.56 = 3 x 10² + 5 x 10¹ + 4 x 10⁰ + 5 x 10^-1 + 6 x 10^-2

(b) Place value grid