common core 5th grade ela 3rd grade 7th grade 8th grade rf.4.3 l.6.4 l.7.4 l.8.4 word study grammar high school math rf.5.3 rf.3.3 fractions l.3.2 punctuation l.4.2 l.5.2 l.6.2 l.7.2 comma 6.ns.4 3.nf.3 6.ns.1 5.nf.1 l.4.1 l.3.1 l.5.1 l.6.1 4.nf.3 l.1.4 writing l.4.3 5.nf.2 l.4.3a w.5.2 w.6.2 w.7.2 w.8.2 esl 4.nf.1 4.oa.4 l.6.5 proportions l.7.5 l.8.5 l.9-10.5 l.11-12.5 l.7.1 l.8.1 sentences l.4.5 6.rp.3 l.5.5 numbers