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What is 7.544 rounded to 1 dp?
7.5
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!
What is the reciprocal of 53?
1/53, which is 0.018868 (to 6 dp)
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 gives you 98?
There are infinitely many possible answers: 0+98, 1+97, 2+96 and so on. Or, using number to 1 dp, 0.1+97.9, 0.2+97.8 and so on. or you could use numbers to2 dp, 3 dp, ... infinitely many dp. Next, you can try sums of 3 numbers, sums of 4 numbers, and so on ... all the way to infinitely many numbers (they do not all have to be positive). And then you can try multiplications: 1*98, 1*1*98, 1*1*2*49 and so on. or 10*9.8 and on and on and on.
