Page 193 - SK Year 5 Mathematics DLP

MULTIPLICATION OF UNITS OF LENGTH

1 a What is the width of
the decorative frame?

6 × 2.8 cm = cm Think
Effort is
4 Stay Positive the Key to width
2.8 cm FOCUSed! Be Success
Positive
× 6
1 6.8 cm
2.8 cm

6 × 2.8 cm = 16.8 cm 1.9 cm

The width of the decorative frame is 16.8 cm.
b Calculate the length, in mm, of the decorative frame.
3
14 × 1.9 cm = mm
1 9 mm Calculate the
1.9 cm = (1.9 × 10) mm × 1 4 length and
= 19 mm 1 7 6 width of each
+ 1 9 0 motivational
14 × 1.9 cm = 266 mm 2 6 6 mm card on the
frame above.
The length of the decorative frame is 266 mm.

3
2 56 × 7 m = cm
4
3
3
Method 1 Method 2 7 m = 7 m + m
4 4 25
3 14 31 3
56 × 7 m = 56 × m = (7 × 100) cm + ( x 100) cm
4 4 4
1 1
= 434 m = 700 cm + 75 cm

= (434 × 100) cm = 775 cm
3 2
= 43 400 cm 4 3
7 7 5 cm
× 5 6
1 1 1
3 4 6 5 0
56 × 7 m = 43 400 cm
4 + 3 8 7 5 0
4 3 4 0 0 cm

• Use various daily life situations involving multiplication such as 185
5.1.5 finding the length of joined benches or tables.
• Instil other moral values such as perseverance and diligence.