Asked by dk

without multiplying, how do you know that the product of 399 and 48 is smaller than 20,722?
Answered by bobpursley
what is 50x400?
Answered by dk
20,000
Answered by Ms. Sue
Since 399 is less than 400 and 48 is less than 50, then obviously the answer must be less than 20,000. Right?

Answered by christina manley
the world in the 1400s
Answered by Juan
how can you show without multiplying that 4/9 is greater then 0.4
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