sweetpea3829 Posted September 13, 2012 Share Posted September 13, 2012 DS5 is working through Singapore 1A and has reached Unit 6, numbers to 20. He's pretty sharp with mathematics, but this whole concept of making a ten and then adding the singles is tripping him up. Truth be told...I, myself, am not seeing how this method is any quicker than adding it in my head. For example, if I'm adding 8+4, I'll start at 8 and count, in my head, 9-10, 11-12. The Singapore way means I have to remember how many to add to 8 to make a 10 (2), then subtract that from the singles I'm adding (4-2), and then add THAT back to the 10 for the answer of 12. To me, it takes more time! In teaching this method to DS, I'm getting a lot of :blink: from him. Is this method important in the later units in Singapore? Something that he really should have down pat for higher level math? Or can we move on because it's not really that important? Quote Link to comment Share on other sites More sharing options...
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