Primary 3 Mathematics tuition for Katong families can begin with comparing two masses written in kilograms and grams. The smaller gram component does not automatically mean the smaller total mass. Both parts must be included in a common unit.
Choose a weekday when school and travel leave enough attention to label the quantities. Choose a weekend when a rested start supports the explanation better. Leave room for a fresh independent check later.
Before selecting a class time, ask your child to convert each mass into grams. That attempt helps distinguish a conversion difficulty from a subtraction error.
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Convert both complete masses
One kilogram equals one thousand grams. A compound mass contains the grams in the full kilograms plus the stated extra grams.
Label each total before comparing. This prevents a learner from subtracting only the two gram components while ignoring their different kilogram parts.
If the conversion is secure but subtraction slips, target the calculation. If one part changes value during conversion, begin with the unit relationship.
Two kilograms fifty grams compared with one kilogram seven hundred and fifty grams
One parcel has mass 2 kg 50 g = 2,050 g. Another has mass 1 kg 750 g = 1,750 g. The first is heavier.
The difference is 2,050 − 1,750 = 300 g. Check by adding three hundred grams to the lighter mass: 1,750 + 300 = 2,050 g.
For a fresh attempt, compare three kilograms one hundred grams with two kilograms eight hundred grams. Their masses are three thousand one hundred grams and two thousand eight hundred grams, again differing by three hundred grams.
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Choose a slot with room for unit checking
A weekday lesson can work with a genuine settling pause. A rushed learner may compare fifty and seven hundred and fifty without including the kilograms.
A weekend may allow more patient organisation, but inspect what happens before and after class. Another demanding commitment can reduce attention.
For a Katong household, assess the full journey to the confirmed teaching address and home again. Confirm actual available hours and suitable placement directly.
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Keep conversion and comparison distinct
A useful tutor labels the two complete masses first. Only then does the subtraction find how far apart they are.
Vary the kilogram and gram components next. Include a pair with the same kilograms so the child can explain why the gram components then decide the comparison.
Ask how individual working is inspected in the 3-pax tutorial. The tutor should distinguish an incorrect conversion from a valid representation followed by an arithmetic slip.
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Reconstruct the heavier mass on a fresh attempt
A few days later, offer another manageable compound-mass comparison without the earlier working. Let your child organise the units.
If both gram totals are correct but the difference is wrong, inspect subtraction. If the totals are wrong, revisit the conversion before practising comparison.
Review the lesson day alongside this evidence. More meaningful masses, useful addition checks and fewer prompts matter more than completing many similar questions.
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Make the starting position clear
The Primary 3 Mathematics tuition overview provides the wider level route. Bring current school materials, a recent independent attempt and a note of the first step that needed help. Preserve the original working so the tutor can inspect your child’s own decisions.
The Katong tutor guide describes enquiries for families considering the Bukit Timah teaching location near Sixth Avenue MRT. Katong identifies the families addressed here; it does not establish a branch in the neighbourhood. Confirm the venue and placement directly. The MOE primary curriculum and syllabus page provides the official curriculum route.
For a parent–student consultation, share your preferred weekdays or weekends, actual travel starting point and child’s usual energy pattern. Ask about current class fit, lesson times, fees and availability before enrolment. Sign up after the starting position is clear and the weekly arrangement looks sustainable.