math for primary grade 4

1. Math : Whole Numbers (2)
P4B Al – Idrisi 2013-2014
By. Ust . Muhtar Lutfi

2. 80
82
85 90
1. Ribbon A is 82 cm long
82 is between 80 and 90.
It is nearer to 80 than to 90.
82 is 80 when rounded off to the nearest
ten.
We say 82 is approximately equal to 80.
We write 82 = 80.
So, Ribbon A is 80 cm long when rounded
off to the nearest ten centimetres
I wanna be
pilot… and
you??

3. 90
95
95
100
Ribbon C is 95 cm long
Kalian mo bisa..
Yuk perhatikan
guru kita...!
95 is exactly halfway between 90 and 100.
95 is 100 when rounded off to the nearest ten.
95 = 100
Ribbon C is 100 cm long when rounded off to
the nearest ten centimetres.
I wanna be ... The
Walking Qur’an