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How many ways can you rename 1329 as a sum of smaller numbers?
Infinitely many. 1 + 1328 2 + 1327 and so on. Then consider numbers to 1 decimal place (dp). 1.1 + 1327.9 1.2 + 1327.8 etc. Next you can include numbers to 2 dp, 3 dp, 4 dp all the way to infinitely many dp. Next you can look at sums of 3 number, 4 number, ... infinitely many numbers.
What is the answer to 0.7947 rounded off?
Rounded off to how many decimal places (dp) !... 0.795 (3 dp) 0.80 (2dp)
What equals 104?
There are infinitely many possible answers. 52 + 52, 51 + 53, 50 + 54, ... ,1 + 103, 0 + 104, -1 + 105, ... : there are infinitely many such pairs. Then consider numbers to 1 decimal place: 51.9 + 52.1, 51.8 + 52.2, 51.7 + 52.3, ... : again, infinitely many pairs. and then 2 dp: 51.99 + 52.01, 51.98 + 52.02, ... then 3 dp, 4 dp, 5 dp, all the way to infinitely many dp. Next, consider triplets: 34 + 35 + 35, 34 + 34 + 36, 34 + 33 + 37 and so on. Again, with 1 dp, 2 dp, and on and on. Then start with multiplication. 1*104, 2*52, 3*34.66..., 4*26 etc and again with 1 dp, 2 dp, and so on. Then you have other, algebraic functions. But I hope that by now, you have got the point!
How many decimal places are there in the product of 3.012x6.2034?
7. 3.012 has 3 dp 6.2034 has 4 dp so their product has 3 + 4 = 7 dp. If there are trailing zeros, these would not normally be written and so would reduce the number of dp; the last digit is 2 x 4 = 8, which is not zero, so there will be 7 dp in their product.
How many feet is 50cm?
50 cm = 1.64 feet (to 3 dp)
