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Addition/Subtraction of Numbers

Author:spkwan

Topic:Arithmetic

1. Addition(of two 2-digit numbers) Challenge

WORKSHEET - Addition of Numbers

snapshots 2022/06/08(Wed) 1E, 1D & 1A

snapshots 2022/06/08(Wed) 1E, 1D & 1A

for discussion:
1) math analysis
2) variations e.g. max, min, sum=50, ... — for discussion: 1) math analysis 2) variations e.g. max, min, sum=50, ...

2. Addition/Subtraction Challenge

snapshot 2022/06/22(Wed) 1E

snapshot 2022/06/22(Wed) 1E — https://nrich.maths.org/virtualdice/responsive.html

virtual dice

3. Digits 1-9 Challenge

snapshot 2010/12/10 2D

snapshot 2010/12/10 2D — https://www.geogebra.org/m/kfwrphgr

4. Reference: Darrell Morgan 〈The Digits 1 to 9〉

4. Reference: Darrell Morgan 〈The Digits 1 to 9〉 — GeoGebra apps: https://www.geogebra.org/m/u2uvrzzg https://www.geogebra.org/m/t4hum8mj https://www.geogebra.org/m/cr5mbcmd

More References

1. NRICH 〈Playing with Dice〉 https://nrich.maths.org/8311 2. Lynda R. Wiest 〈Fostering number sense through digits & dice 〉 https://www.researchgate.net/publication/234661837_Fostering_Number_Sense_through_Digits_and_Dice 3. Nancy Segal Janes 〈Exploring Math with Polyhedra Dice〉

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