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1 )63*5 2)78*9 3)57*16 4)62*4 5)39*9
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3 votes
1 )63*5
2)78*9
3)57*16
4)62*4
5)39*9

User Yogeesh
by
7.8k points

1 Answer

2 votes

Answer:

if it is necessary to calculate astutely

63*5 = 70*5 - 7*5 = 315

78*9 = 78*10 -78 = 702

57*16 = 60*16 - 3*16 = 912

62*4 = 60*4 + 2*4=248

39*9 =40*9 - 9=351

1 )63*5=315

2)78*9=702

3)57*16=912

4)62*4=248

5)39*9=351

Explanation:

User NotAnAmbiTurner
by
6.8k points
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