Grade 1 Math 5.3, Identify related facts, Fact families
15:21
Grade 1 Math 5.4, Use addition to check subtraction
16:01
Grade 1 Math 5.7b, Part 2 - Choose an operation, clue words
17:03
Grade 1 Math 5.8, Ways to make numbers to 20
12:45
Grade 1 Math 5.6, Use related facts, add & subtract
18:17
6.5 Order Fractions
14:16
Grade 1 Math 3.3, Add doubles (Doubles fact)
14:38
Grade 1 Math 5.5, Unknown (missing) numbers, related facts
13:14