Questions

From Best to Worst

41 P5.ST.JC.18121174

Level 3
Adam has 300 stickers in 3 colours.
40% of the stickers are blue.
The number of red stickers is ¹₃ that of yellow stickers.

What percentage of the stickers are yellow?
How many red stickers are there?

3 m

Attempt

Fraction to units Finding percent Percent of a set Percent to units Combined repeated identity Remainder concept Units table Units manipulation

42 P5.ST.JC.18121175

Level 3
Adam has 300 stickers in 3 colours.
40% of the stickers are blue.
The rest are red and yellow stickers in the ratio 2 : 3.

What percentage of the stickers are yellow?
How many red stickers are there?

3 m

Attempt

Fraction to units Finding percent Percent of a set Ratio to units Combined repeated identity Remainder concept Units table Units manipulation

43 P5.ST.JC.18121176

Level 3
Adam has stickers in 4 colours.
⁵₇ of the stickers are blue.
The rest of the stickers are red, yellow and green in the ratio of 1 : 5 : 3.
If there are 40 more yellow stickers than green stickers,
how many blue stickers are there?

3 m

Attempt

Fraction to units Ratio to units Combined repeated identity Remainder concept Units table Units manipulation

44 P6.RD.TL.16010126

Level 3
Queenie baked 390 cookies and cupcakes. After she gave 0.3 of the cookies and 0.4 of the cupcakes to her friends, she was left with an equal number of cookies and cupcakes. How many cookies had she left?

4 m

Video Attempt

Decimal to units Equal stage after All change Units table Units manipulation

45 P5.ST.JC.18160201

Level 3
In a school, there is a total of 400 people.
30% are adults.
The rest are children.
The number of boys and girls is in the ratio of 5 : 9.