Dewiswch y swm sydd ar goll o'r teulu ffeithiau.

(Choose the missing sum from the fact family)

9 + 4 = 13

4 + 9 = 13

13 - 9 = 4

?

• 9 + 13 = 4

• 13 - 4 = 9

• 9 - 4 = 13

• 4 + 13 = 9

Hanner 70 (Half of 70)

• 45

• 15

• 25

• 35

Dwbl 34 =

(Double)

18 + 6 =

19 - 5 =

Dwbl 29 =

(Double)

Hanner 300 ( Half of 300)

• 250

• 450

• 150

• 350

Dewiswch y swm sydd ar goll.

(Choose the missing sum.)

70 + 80 = 150

150 - 70 = 80

150 - 80 = 70

?

• 80 - 70 = 150

• 150 + 80 = 70

• 70 - 80 = 150

• 80 + 70 = 150

Dewiswch un chwarter ( choose one quarter )

• 
• 
• 

Dewiswch yr amser cywir

• Chwarter i 6

• Hanner awr wedi 8

• 8 o'r gloch