减法 Maths Home work
Mummy says
Subtraction .. Is Just counting backward. 10,9,8,7,6,5,4,3,2,1 and always think the number is in before .
Addition .... Is counting forward. 1,2,3,4,5,6,7,8,9,10. and always think the number is in after .
I use fingers count for number less than 10.
etc 9-1 = ? ... I put out my 9 fingers than fold the 1 finger down ,, I will know e answer already.
if 14 -2 = ? ... I put out my 2 finger because i need to count for 14.. number before 14 is 13 than 12 when i says 13 i need to put down 1 finger and 12 put down another one. my answer will be 12.
I had understand the basic of subtraction .
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