You can do this activity with your students at the board or on worksheets.
Provide them with a really long horizontal sum. Something like this:
3 + 11 + 7 + 5 + 5 + 4 + 9 + 1 + 2 + 13 + 8 =
The idea here is to group pairs of numbers into tens or multiples of ten so that they can quickly and easily find the sum using mental math.
Around the World: Great for 3rd and 4th grade but also can be adapted for other grades. MATERIALS: large flash cards Two Player Instructions: Have a speed race to see who can go “around the […]
Download this Game FREE and File it Away for Later! (NO EMAIL Opt-in Required) Students will need to think carefully about the cards they decide to keep, since they are not only selecting the numbers […]