Question #34b17

1 Answer
Jim G.
Nov 28, 2017

#278" and "800#

Explanation:

#"tens means numerically "10's" that is "10#

#"ones means numerically "1's" that is "1#

#"4 tens means 4 'lots' of 10"#

#"that is "10+10+10+10=4xx10#

#"6 ones means 6 'lots' of 1"#

#"that is "1+1+1+1+1+1=6xx1#

#"using "color(blue)"multiplication"#

#"4 tens + 22 tens + 18 ones"#

#="26 tens + 18 ones"larrcolor(blue)"collecting 'lots' of 10 together"#

#=(26xx10)+(18xx1)#

#=260+18#

#=278#

#"20 tens + 180 ones +42 tens"#

#="62 tens + 180 ones"#

#=(62xx10)+(180xx1)#

#620+180#

#=800#

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