math
posted by heatherly on .
Draw a picture of baseten blocks and use the area interpretation
for multiplication to show 34 X 28 complete the calculation by using a paperandpencil
algorithm

draw a rectangle 34 by 28
Along the length, mark off 10,10,10,4
and along the width mark off 10,10,8
fill in the grid using those marks
I see 6 10by 10 squares > 600
I240 see 2 rectangles 4 by 10 > 80
I see 3 rectangles 8 by 10 > 240
and finally I see a 4 by 8 rectangle > 32
so 600 + 80 + 240 + 32 = 952
I hope you are learning this for the purpose of understanding multiplication, and are not actually using this method to multiply.