STRATEGIES

41 P5.ST.JC.18121036

Level 2
Adam pays $20.60 for a marble, a bead and a sticker.
The marble costs $2.30 less than the bead.
The bead costs $1.90 less than the sticker.
What is the cost of 3 stickers more than 2 marbles?

3 m

Video Attempt

42 P4.ST.JC.18120908

Level 1
There are 2300 marbles in total.
800 are red marbles.
The rest are blue marbles.
How many less red marbles than blue marbles are there?

2 m

Attempt

W Addition & subtraction Model Comparison

43 P1.ST.JC.18120608

Level 1
Adam has 3 stickers.
Bryan has 2 less stickers than Adam.
How many stickers does Bryan have?

Which model should we draw?
(1) Model Part-whole
(2) Model Comparison
Is the total given?
(1) Yes
(2) No
Who gets the shorter bar?
(1) Adam
(2) Bryan
Number of stickers that B has =

4 m

Attempt

W Addition & subtraction Model Comparison

44 P2.ST.JC.18120706

Level 2
Adam needs 40 stickers.
He has 10 stickers.
How many more does he need?

Which model should we draw?
(1) Model Part-whole
(2) Model Comparison
Is the total given?
(1) Yes
(2) No
Who gets the shorter bar?
(1) Has
(2) Needs
Number of more stickers that Adam needs =

4 m

Attempt

W Addition & subtraction Model Part-whole

45 P6.ST.JC.18121307

Level 2
Find the value of 1 unit.

5 u - 20 = 1 u - 8
1 u - 8 = 5 u - 20
8 - 1 u = 20 - 5 u
20 - 5 u = 8 - 1 u

4 m

Video Attempt

W 4 operations Units method Units equations

46 P6.ST.JC.18121308

Level 2
Find the value of 1 unit.

6 u - 15 = 1 - 2 u
1 - 2 u = 6 u - 15
5 u - 2 = 14 - 3 u
14 - 3 u = 5 u - 2

4 m

Video Attempt

W 4 operations Units method Units equations

47 P5.ST.JC.18121037

Level 3
Adam spends $24.70 on a sticker, a marble and a bead.
The marble costs $1.20 more than the bead.
The sticker costs ¹₃ as much as the marble.
What is the cost of 3 stickers, 2 marbles and 4 beads?

4 m

Attempt

Fraction to units D 4 operations More than or less than Units method