3.15 To multiply with decimals

Mathematics

Measurement and time

Area

Educator section

Memorandum

1.

1.1 5,76

1.2 12 302,4

1.3 70,08

1.4 2,232

1.5 1 412,64

1.6 105,86

1.7 238,1

1.8 15,7

Leaner section

Content

Activity: to multiply with decimals

1. As you might have realised, working with decimal fractions forms an important part of this module. How good is your memory of what we have done in the previous module? Apply your memory and calculate the following without using a pocket calculator.

1.1 3,2 × 1,8 =

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

1.2 5 126 × 2,4 =

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

1.3 21,9 × 3,2 =

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

1.4 1,86 × 1,2 =

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

1.5 32,4 × 43,6 =

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

1.6 13,4 m × 7,9 m =

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

1.7 285,72 ÷ 1,2 =

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

1.8 2,355 ÷ 0,15 =

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________