This would be 7 times 64 (8^2) + 7 times 8 + 7 = 511.
Writing a number in standard form simply means to express the number in its 'normal' form. Therefore, your example is written in standard form as: 777
6900 in decimal form is simply 6900. Decimal form refers to the base-10 numbering system that we commonly use, where each place value is a power of 10. In this case, the number 6900 is already in decimal form, as it is written using the digits 0-9 in the base-10 system.
Exponential form of 120 is 1.2 x 10 ^ 2.
33 777
777, which is equal to 8^3 - 1 = 511 in base 10.
This would be 7 times 64 (8^2) + 7 times 8 + 7 = 511.
Writing a number in standard form simply means to express the number in its 'normal' form. Therefore, your example is written in standard form as: 777
base-2 : 111 = 7(base-10) base-3: 222 = 26(base-10) base-4: 333 = 33(base-10) base-5: 444 = 124(base-10) base-6: 555 = 215(base-10) base-7: 666 = 342(base-10) base-8: 777 = 511(base-10) base-9: 888 = 728(base-10) base-10: 999 = 999(base-10) base-11: AAA = 1241(base-10) base-12: BBB = 1727(base-10) base-13: CCC = 2196(base-10) base-14: DDD = 2743(base-10) base-15: EEE = 3374(base-10) base-16: FFF = 4095(base-10) In short, base-n: n cubed - 1(base-10)
777
10-1
100110 base 2 = 38 base 10
106
As far as it's possible to tell, "242 million" is already expressed in base-10 form. Written out completely, it's: 242,000,000
777
5 base 10
39% of 777 = 39% * 777 = 0.39 * 777 = 303.03