Unit 3 · Measurement and Data
12 Clay Lumps Joined and Split — Each Piece?
Lesson 4 of 12
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About this lesson
Ophelia has 12 clay lumps: 100g×2, 50g×1, 5g×3, 2g×3, 1g×3. Total = 200+50+15+6+3 = 274g. Split equally → 137g each. Option E (274g) traps students who forget to halve; option A (87g) catches those who miss the two 100g lumps.
Chapters
0:00Introduction
0:22The Question
1:09Categorising and tallying the large masses
1:34Tallying the remaining small masses
1:54Total combination and halving
2:26Strategic exam tip
3:05Correct answer
Question
Ophelia has 12 lumps of clay with the following masses:
| 100 g, 100 g |
|---|
| 50 g |
| 5 g, 5 g, 5 g |
| 2 g, 2 g, 2 g |
| 1 g, 1 g, 1 g |
She joins them all to make one big lump.
She splits the big lump into two equal pieces.
What is the mass of each piece?
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