P5 area of triangles (fr Nerissa)

Substitution (from brilliant)

P6 numbers, fraction, money (fr PCS CA via CSE)

P6 percentage, fraction (fr CSE)

P5 fractions (fr koobits via Ricco)

P5 p6 substitution

P6 percentage increase (targeting math)

P5 fraction (fr P6 ca1)

P5 fraction (targeting math PS)

P6 percentage (fr Avrick’s fren)

P6 speed (fr Avrick’s fren)

P6 fraction, percentage, average (fr nanhua, st nic etc)

P6 percentage increase/decrease, money (fr CCL)

Q1.
Ali's monthly allowance is $100.
His mother increases or decreases his monthly allowance base on what Ali was given the previous month.
She increased his allowance by $10 in January.
She then decreased his allowance by $10 in February.
(a) How much is Ali's allowance in January?
(b) How much is Ali's allowance in February?

__________
Q2.
Ali's monthly allowance is $100.
His mother increases or decreases his monthly allowance base on what Ali was given the previous month.
She increased his allowance by 10% in January.
She then decreased his allowance by 10% in February.
(a) How much is Ali's allowance in January?
(b) How much is Ali's allowance in February?

P6 percentage (fr brilliant)

P4 Numbers, transfer (remedial WS)

P4 fraction, basic (remedial WS)

P6 percentage, pie chart (NE, national education)

P5 fractions (common misconception)

Compare the "minor" difference in the question (with or w/o "kg"), yet a drastic difference in meaning and hence difference in solution

P5 numbers, money (fr Targeting Math WS)

P5 P6 Fraction, percentage (fr PCS practice paper)

P5 Numbers, model heuristics H1 (fr PCS heuristics worksheet)

“How to Solve It” — This is the book by the renown Mathematician: George Polya.

"How to Solve It" — This is the book by the renown Mathematician: George Polya.

See if you can still get it from Amazon.

Sent from my iPhone

P5 Numbers, age (fr Meghan)

P6 fractions (fr Targeting math via Si En)

P6 / Sec1 Numbers (fr Ms Sheryl Tan)

Add in operators and make 6. 

(Hint: You are allowed to use powers and roots)

1 1 1 = 6

2 2 2 = 6

3 3 3 = 6

4 4 4 = 6

5 5 5 = 6

6 6 6 = 6

7 7 7 = 6

8 8 8 = 6

9 9 9 = 6