Explain How To Use 2s Facts To Find 4×9

This article will show you how to use 2s facts in order to find the 4×9 digit number. By using addition and subtraction doubles, students will easily understand this concept. Students should already know how to think about 2s, such as 2×3 is the double of 3 and 2×7 is the double of 7. They should also be familiarized with the commutative property for addition doubles.