I"m not sure which way to go, and would like some opinions. My boys used singpore 1B last year as first graders. We used something else for first semester this year, but I'd like to pick up again with singapore. 1B was easy. I've looked over the singapore site, and looked at their placement tests, but they don't seem very comprehensive, so I'm still not sure of what to do.
Boys have a solid addition / subtraction fact base, place value, borrow and carry, etc. I've started multiplication facts , and one has many memorized and the other doesn't, but both understand the concept.
So, for anyone with knowledge of the singapore 2 level, would you purchase with A or B?