
The build-down and build-up multiplication strategies are two of many important strategies included in The Box and Book of Facts for Multiplication and Division from ORIGO Education. Teaching the build-up strategy for multiplication from ORIGO Education on Vimeo. Teaching the build-down strategy for multiplication from ORIGO Education on Vimeo. For example, these strategies can be extended to solve 19 x 3 and 26 x 6. Ask questions such as, What patterns do you see? How are the circles arranged? What do you notice about the digits of the circled products?Įncourage students to apply these multiplication strategies for 6s and 9s to numbers beyond the basic facts.

Have students circle the products of the facts on hundreds charts.
Games for multiplication of 9 download#
Click here to download the Times This game to play in your classroom. Games are a great way to reinforce and practice number fact strategies. The card below shows that 6 x 3 is just one more row of three added to the 5-by-3 array.Ħs and 9s Multiplication Facts Game: Reinforce and Practice the Strategies Likewise, students can “build up” from a known fives fact to figure out a sixes fact. Notice how the card can be folded to cover up the bottom row of the array. For example, students can think of 9 x 3 as the same as ten groups of three less one row of three.

Students figure out the 9s multiplication facts by “building down” from a known 10s fact.

Now, on to the strategies… Introduce the 6s and 9s Strategiesīegin by using cards like the ones shown below to help students visualize the relationship between the nines and tens facts and relationship between the sixes and fives facts.
