General Discussion
In reply to the discussion: How would you answer this test question? From a 1st grade Common Core test. [View all]Ms. Toad
(38,327 posts)It might be appropriate to classify subtraction as addition of a negative - but sentence which does not include a "-" sign is not subtraction. I am still close enough to math (I taught it for 11 years, and have two degrees in it) to be pretty darn sure that that the question has no relation to what you need to know for STEM careers - and that is part of the point of the Common Core - to decrease math illiteracy. This question increases it.
(It would have been perfectly appropriate to ask which subtraction sentence was correct if it included the answer 7-3=4, or 7-4=3. It would also have been appropriate (although too advanced for first grade) to rewrite the addition sentence as subtraction, without moving the numbers across the "=" sign (4-(-3)=7). But 4+3=7 is an addition sentence, not a subtraction one.)