## O-Level Elementary Math

### Re: O-Level Elementary Math

You're most welcome, Candy08. Hope you managed to get a slot with him:).

- The Math Note
- KiasuNewbie
**Posts:**7**Joined:**Thu Mar 28,

### Re: O-Level Elementary Math

Thank you for your reply. Actually I was just stating the general idea for rounding off a number but not answering the question per se because i am aware that this question might cause confusion. Thank you for the insight!Pand wrote: ↑Thu Mar 28, 2019 5:04 pmSorry, unfortunately, your answer is wrong. I am a math teacher and am aware of the confusion this question causes to people not familiar with bounds.The Math Note wrote: ↑Thu Mar 28, 2019 11:05 am0.034 rounded off to the nearest 0.01 is 0.03

0.025 rounded off to the nearest 0.01 is also 0.03

So anything between 0.025 and 0.034 rounded off to the nearest 0.01 is 0.03.

Hope that helps.

The cambridge solution to a similar question in the o level is same as mine. Unfortunately, only teachers have access to the report.

### Re: O-Level Elementary Math

No Problem.. this is one of the question that causes students to falter...

another question in the O level that confuses many is "provide your answer to a reasonable accuracy".... students often fail to understand the mathematical significance of that question beyond practical aspects...

another question in the O level that confuses many is "provide your answer to a reasonable accuracy".... students often fail to understand the mathematical significance of that question beyond practical aspects...

### Re: O-Level Elementary Math

From my boy. Btw he mentioned that this was more MO than normal Math. Is he correct or does normal Math nowadays encompass elements of MO too?

### Re: O-Level Elementary Math

This comes under the topic of Number Patterns and definitely not at the MO-level. I would say that it is a pretty tough question for lower secondary students, but if it is as part of preparing for O-Levels in Sec 4, may be more reasonable.

- MathematicsMagic
- KiasuNewbie
**Posts:**7**Joined:**Sat Feb 02,

### Re: O-Level Elementary Math

Okay... I know this upper bound thing. BUT, how to convince the student into accepting it?Pand wrote: ↑Thu Mar 28, 2019 5:04 pmSorry, unfortunately, your answer is wrong. I am a math teacher and am aware of the confusion this question causes to people not familiar with bounds.The Math Note wrote: ↑Thu Mar 28, 2019 11:05 am0.034 rounded off to the nearest 0.01 is 0.03

0.025 rounded off to the nearest 0.01 is also 0.03

So anything between 0.025 and 0.034 rounded off to the nearest 0.01 is 0.03.

Hope that helps.

The cambridge solution to a similar question in the o level is same as mine. Unfortunately, only teachers have access to the report.

As in, some of the students can be quite stubborn and unwilling(and unamused) to accept this idea. Especially when the answer key in assessment book normally use the "wrong" upper bound(in this example, 0.034).