How would we multiply the numbers 13680347,35702369 and 25692359 with 9 mentally ?what is the pattern that emerges solution?
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you just have to divied the lager no to it approx value like 25692359 oky u can write it as 25000000 *9 then 690000*9 then 2300*9 then 59*9 and add then all it's become easy to calculate if your addition are stronger hope it help
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