Value Pak shows you the different ways to compare 2-digit numbers. (15m 44s) Add Tens and Ones Video has Closed CaptionsCC Join Mrs. Markavich for a word problem with her friend Professor Barble ...

Join Mrs. Markavich for a missing addend word problem with Professor Barble! Next look out for two of favorite Math Might friends D.C. and Value Pak as they help use learn to add two-digit number ...

The two-digit number ab stands for 10a + b since the first digit represents tens and the second represents units. If 10a + b = 7 (a + b), then 10a + b = 7a + 7b, and so 3a = 6b, or more simply, a ...