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Mathematics 15 Online
OpenStudy (anonymous):

Which are partial products for 34 × 28? Choose all answers that are correct. A. 24 B. 32 C. 80 D. 600

OpenStudy (anonymous):

can anybody help

OpenStudy (anonymous):

plz

jimthompson5910 (jim_thompson5910):

think of 34 as 30+4 think of 28 as 20+8 so (34)*(28) = (30+4)*(20+8) does that help?

OpenStudy (anonymous):

no

jimthompson5910 (jim_thompson5910):

|dw:1450227851374:dw|

jimthompson5910 (jim_thompson5910):

to fill out the boxes, we multiply the outer terms example: 30 times 8 = 240 |dw:1450227899950:dw|

jimthompson5910 (jim_thompson5910):

another example: 20 times 4 = 80 |dw:1450227922911:dw| I'll let you fill out the other boxes

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