What strategies can be used whn multiplying

repeated addition, skip counting, or equal groups

Step-by-step explanation:

repeated addition

for example if you do 3x4 thats equals 12. to do repeated additoin you can do 3 + 3 + 3 + 3 =12 OR 4+4+4=12

skip counting

3 x 4 =12

4,6,8,12

3,6,9,12

equal groups

4 x 3 =12

(see attachment)

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0