Answers

2015-07-13T22:44:22+08:00
2..........................
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2015-07-13T23:40:17+08:00
2…..................
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lcm not gcf
srry got confused
to get the lcm the ones aligned with the same number is understood as one number and if there are no other aligned same numbers you just multiply it with the other numbers therefore the lcm of 18 and 20 is 180.. From a Grade 6 student at the Philippines
no
the answer is 90 eventually im also Grade 6 from the Phil.