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Answers:just pick a number and make it a letter (variable) like this , it would be this x - 4 = 6 (: hope i helped and DANG they put to much homework on kids!
Answers:IDK BUT I WANNA FIND OUT TOO CUZ I WANNA BE A 3RD GRADE TEACHER WHEN I GROW UP!!!!!!! : )
Answers:you can have the kids make little paper houses and right the division and multiplication facts on the house and have them study them or quiz them on them or you can have like partners with two kids in each work together on a small poster and one kid does multiplication and the other does division then have them share there set of numbers with the class then hang them up and do a little with them everyday then you can give them a treat for whoever can remember a certain amount of factors in a certain amount of time (sorry its so long but hope it helps and hope you understand what im talking about)
Answers:32 girls and 36 boys Let x = number of boys Let y = number of girls y = x - 4 68 = x + y 68 = x + x - 4 72 = 2x x = 36 y = 36 - 4 y = 32 Or the simplest way would be to divide 68 by 2 and substract 2 from 34 and add 2 to the other 34.