Quiz about Lluosi a Rhannu Rhifau Cymysg (heriol)

Question 1

Er mwyn delio gyda rhifau cymysg, beth allen ni wneud?

Accepted Answer

Trosi i ffracsiwn pendrwm e.e.

$$3\frac{1}{2}=\frac{7}{2}$$

Answer

Rhoi lan yn syth

Question 2

Cynhesu lan:

Beth yw $$2\frac{3}{4}$$ fel ffracsiwn pendrwm?

Accepted Answer

$$\frac{11}{4}$$

Answer

$$\frac{9}{4}$$

Answer

$$\frac{5}{4}$$

Answer

$$\frac{10}{2}$$

Question 3

Cynhesu lan:

Beth yw $$\frac{14}{3}$$ fel rhif cymysg?

Accepted Answer

$$4\frac{2}{3}$$

Answer

$$4\frac{1}{3}$$

Answer

$$5\frac{1}{3}$$

Answer

$$5\frac{1}{2}$$

Answer

$$3\frac{3}{4}$$

Question 4

$$5\frac{2}{3} imes3\frac{5}{6}$$

Pa swm sy'n gywir er mwyn cael yr ateb?

Accepted Answer

$$\frac{17}{3} imes\frac{23}{6}$$

Answer

$$\frac{17}{3} imes3\frac{1}{2}$$

Answer

$$\frac{15}{3} imes\frac{5}{6}$$

Answer

$$\frac{3}{17} imes\frac{26}{6}$$

Question 5

$$1\frac{3}{4} imes5=$$

Accepted Answer

$$8\frac{3}{4}$$

Answer

$$10\frac{1}{3}$$

Answer

$$7\frac{3}{4}$$

Answer

$$9\frac{1}{4}$$

Answer

$$9\frac{3}{4}$$

Question 6

$$7 imes\frac{3}{5}=$$

Accepted Answer

$$4\frac{1}{5}$$

Answer

$$5\frac{1}{2}$$

Answer

$$4\frac{3}{5}$$

Answer

Question 7

$$\frac{2}{3} imes5\frac{1}{2}=$$

Accepted Answer

$$3\frac{2}{3}$$

Answer

$$4\frac{1}{3}$$

Answer

$$3\frac{3}{4}$$

Answer

$$4\frac{1}{5}$$

Answer

$$5\frac{1}{3}$$

Question 8

$$4\frac{1}{3} imes3\frac{1}{2}=$$

Accepted Answer

$$15\frac{1}{6}$$

Answer

$$14\frac{5}{6}$$

Answer

$$14\frac{2}{3}$$

Answer

$$13\frac{5}{6}$$

Question 9

$$1\frac{3}{5} imes4\frac{3}{10}=$$

Accepted Answer

$$7\frac{22}{25}$$

Answer

$$6\frac{9}{10}$$

Answer

$$7\frac{13}{24}$$

Answer

$$7\frac{17}{25}$$

Answer

$$6\frac{23}{25}$$

Question 10

$$4\frac{1}{3} imes1\frac{1}{2}=$$

Accepted Answer

$$6\frac{1}{2}$$

Answer

$$6\frac{5}{6}$$

Answer

$$6\frac{1}{6}$$

Answer

$$7\frac{1}{3}$$

Question 11

$$7\frac{1}{2}\div1\frac{3}{4}=$$

Accepted Answer

$$4\frac{2}{7}$$

Answer

$$5\frac{1}{3}$$

Answer

$$4\frac{5}{6}$$

Answer

$$4\frac{5}{8}$$

Question 12

$$4\frac{2}{3}\div1\frac{5}{6}=$$

Accepted Answer

$$2\frac{6}{11}$$

Answer

$$3\frac{7}{8}$$

Answer

$$2\frac{4}{15}$$

Answer

$$2\frac{7}{13}$$

Question 13

$$3\frac{1}{2}\div\frac{3}{4}=$$

Accepted Answer

$$4\frac{2}{3}$$

Answer

Answer

$$2\frac{7}{9}$$

Answer

$$3\frac{1}{2}$$

Answer

$$3\frac{5}{6}$$

Question 14

$$\left(4\frac{2}{3}\right)^2=$$

Accepted Answer

$$21\frac{7}{9}$$

Answer

$$22\frac{1}{6}$$

Answer

$$20\frac{3}{4}$$

Answer

$$16\frac{4}{9}$$

Answer

$$22\frac{2}{9}$$

Question 15

$$9\frac{3}{4}\div2\frac{5}{7}=$$

Mae'r cyfrifiadau yn anodd iawn yma! Defnyddiwch gyfrifiannell os oes angen

Accepted Answer

$$3\frac{45}{76}$$

Answer

$$3\frac{61}{98}$$

Answer

$$3\frac{19}{31}$$

Answer

$$3\frac{39}{74}$$

Answer

$$3\frac{35}{76}$$

Question 16

Beth yw gwerth $$\frac{2}{3}x+3\frac{1}{4}$$ os mae $$x=2\frac{1}{5}$$ ?

Accepted Answer

$$4\frac{43}{60}$$

Answer

$$4\frac{26}{45}$$

Answer

$$3\frac{1}{20}$$

Answer

$$4\frac{1}{2}$$

Answer

$$4\frac{17}{60}$$

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