446 P4.AN.JM.17092805
Level 3
In the figure, ∠ACB = 90°. ∠ACD is 36° more than ∠BCD.
  1. What line is perpendicular to AC?
  2. Find ∠ACD.
3 m
Right angle Model Comparison Units method
447 P5.ST.JC.18121128
Level 1
Fill in the blanks.
There are some blue stickers and red stickers.
The number of red stickers is 60% of the total stickers.
  1. Number of red stickers = _____ u
  2. Number of blue stickers = _____ u
  3. Total number of stickers = _____ u
  4. Number of more red stickers than blue stickers = _____ u
4 m
Percent to units More than or less than Units method
448 P5.RD.NK.23021721
Level
Jane had some lollipops. She sold 20% of her lollipops and gave half of the remainder to her brother. After that, she bought 26 lollipops and had a total of 32 lollipops in the end. How many lollipops did Jane have at first?
4 m
F Multiplication Percent of a set Remainder concept Branching Units method
449 P5.PC.NK.22122112
Level 2
Lisa had $451200. She invested 20% of it and put the rest in an account that gave her 3.5% interest in a year. How much would she have in the account at the end of the first year?
3 m
Percent of a whole Interest F Multiplication Money Units method
450 P4.AN.JM.17092807
Level 3
In the figure, BC is a straight line. ∠ADB = 90°, ∠EDF is equal to ∠FDC but 24° more than ∠ADE.
  1. What line is perpendicular to BC?
  2. Find ∠EDF.
3 m
Right angle Equal stage Model Comparison Units method

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