To find two-thirds of 420, you can multiply 420 by 2/3. This calculation can be simplified by dividing 420 by 3 to get 140, and then multiplying by 2 to get the final answer. Therefore, two-thirds of 420 is 280.
Half of 420 is 210. To find half of a number, you divide it by 2. In this case, 420 divided by 2 equals 210. This is because division is the inverse operation of multiplication, and dividing by 2 is the same as multiplying by 0.5.
To find the answer to this, first divide 420 by 350, which is 1.2. Get the percent value of this by multiplying 1.2 by 100, so the percent value must be 120%. Since we are looking for percent change, subtract 100 from that to get 20%. The answer is "350 changes 20% to become 420", or "420 is 20% more than 350".
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4203 = 420 x 420 x 420 = 74088000
21% of 420= 21% * 420= 0.21 * 420= 88.2
95% of 420 = 399 = 95% * 420 = 95%/100% * 420 = 0.95 * 420 = 399
35% of 420 = 35% * 420 = 0.35 * 420 = 147
38% of 420= 38% * 420= 0.38 * 420= 159.6
88% of 420= 88% * 420= 0.88 * 420= 369.6
420
To round 415 to the nearest 10, we look at the digit in the tens place, which is 1. The digit to its right, 5, is greater than or equal to 5, so we round up. Therefore, 415 rounded to the nearest 10 is 420.