Secondary 1 topics, the foundation the O-Level Mathematics 4052 syllabus builds on. Every question below has a full worked solution.
When a student gets a question wrong in Math Amigo, it does not show the answer straight away. It
reads the working, identifies the step that went wrong, and asks a question that points at the
correction. The worked solution is there once a genuine attempt has been made.
State the number of significant figures in 94.605.
Show the worked solution
A zero between two non-zero digits is significant (Rule 2). Digits: 9, 4, 6, 0, 5.
94.605 has 5 significant figures.
Answer: 5
Example 3
Round off 0.08719 to 3 significant figures.
Show the worked solution
Leading zeros are not significant. The first 3 significant figures are 8, 7, 1. The next digit is 9 (≥5), so round up: 0.08719=0.0872 (to 3 s.f.).
Answer: 0.0872
Questions parents ask
Is it really free?
The free plan is permanent and does not ask for a card. It has daily limits on the AI feedback, and the paid plans lift them.
Which syllabus does this follow?
O-Level Mathematics (4052), for Singapore secondary students. Math Amigo covers Secondary 1 to 4, both O-Level Mathematics and Additional Mathematics.
Will it just show my child the answer?
No. On a wrong answer it looks at the working, points to the step that went wrong, and asks a question that helps the student find the correction. The full worked solution is available after a genuine attempt.