jonka Anquineik Mitchell 8 vuotta sitten
512
Lisää tämän kaltaisia
luonut Steven Madan
luonut Erica MacLean
luonut Betsy Aguilar
luonut Melissa McNab
Drawing a picture of an object and group it by the number you are multiplying.
It's counting by 5's.
Repeated addition is simply adding groups of the same number.
3*4=20
3*5=15