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What numbers make -96?
There are infinitely many possible answers. Start with the addition/subtraction of 2 numbers: (-48,-48), (-49,-47), (-50,-46), and so on then move to numbers with 1 decimal places (dp) (-48.1,-47.9, (-48.2,-47.8) etc and then 2 dp, 3 dp, and so on to infinitely many decimal places. Then look at triplets of number, 4-tuples, 5-tuples etc. In each case, with integers, numbers with 1 dp, 2 dp and so on. Then consider numbers that can be multiplied to make -96. And then move to other functions that can be used, for example exp(ln(6)+ln(16))
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 mean of the numbers 8 4 and 12 in geometry?
Their geometric mean is the cube root of 8*4*12 = cuberoot(384) = 7.268 (to 3 dp)
What expressions are equivalent to -49 - 49?
-98
When you get two decimals how do you know where to put the decimal point in the product?
Count the numbers of digits after the decimal points (DP) in the two numbers.Add these numbers together.Calculate the product, including any trailing 0s.Place the DP so that the number of digits after the DP is the same as the sum of the digits after the DP (step 2).Thus, for 15.38 * 0.0045The first number has 2 digits after the DP, the second has 4, so sum of digits after DP is 2+4 = 6.1538*0045 = 69210.The answer must have 6 digits after the DP so you need to insert a 0 after the DP to make it .069210 which can then be simplified to .06921
