math help

What is 9/100 + 8/9?

What is 9/100 + 8/9?

Here's how to add

9
100
+
8
9

Step 1

Of course, you can't add two fractions if the denominators (bottom numbers) don't match. To get a common denominator, multiply the denominators together. Then we fix the numerators by multiplying each one by their other term's denominator.

Now you multiply 9 by 9, and get 81, then we multiply 100 by 9 and get 900.

9/100 times 9

Do the same for the second term. We multiply 8 by 100, and get 800, then multiply 100 by 9 and get 900.

8/9 times 100

The problem now has new fractions to add:

81
900
+
800
900

Step 2

Since our denominators match, we can add the numerators.

81 + 800 = 881

The sum we get is

881
900

Step 3

The last step is to reduce the fraction if we can.

To find out, we try dividing it by 2...

Nope! So now we try the next greatest prime number, 3...

Nope! So now we try the next greatest prime number, 5...

Nope! So now we try the next greatest prime number, 7...

Nope! So now we try the next greatest prime number, 11...

Nope! So now we try the next greatest prime number, 13...

Nope! So now we try the next greatest prime number, 17...

Nope! So now we try the next greatest prime number, 19...

Nope! So now we try the next greatest prime number, 23...

Nope! So now we try the next greatest prime number, 29...

Nope! So now we try the next greatest prime number, 31...

Nope! So now we try the next greatest prime number, 37...

Nope! So now we try the next greatest prime number, 41...

Nope! So now we try the next greatest prime number, 43...

Nope! So now we try the next greatest prime number, 47...

Nope! So now we try the next greatest prime number, 53...

Nope! So now we try the next greatest prime number, 59...

Nope! So now we try the next greatest prime number, 61...

Nope! So now we try the next greatest prime number, 67...

Nope! So now we try the next greatest prime number, 71...

Nope! So now we try the next greatest prime number, 73...

Nope! So now we try the next greatest prime number, 79...

Nope! So now we try the next greatest prime number, 83...

Nope! So now we try the next greatest prime number, 89...

Nope! So now we try the next greatest prime number, 97...

Nope! So now we try the next greatest prime number, 101...

Nope! So now we try the next greatest prime number, 103...

Nope! So now we try the next greatest prime number, 107...

Nope! So now we try the next greatest prime number, 109...

Nope! So now we try the next greatest prime number, 113...

Nope! So now we try the next greatest prime number, 127...

Nope! So now we try the next greatest prime number, 131...

Nope! So now we try the next greatest prime number, 137...

Nope! So now we try the next greatest prime number, 139...

Nope! So now we try the next greatest prime number, 149...

Nope! So now we try the next greatest prime number, 151...

Nope! So now we try the next greatest prime number, 157...

Nope! So now we try the next greatest prime number, 163...

Nope! So now we try the next greatest prime number, 167...

Nope! So now we try the next greatest prime number, 173...

Nope! So now we try the next greatest prime number, 179...

Nope! So now we try the next greatest prime number, 181...

Nope! So now we try the next greatest prime number, 191...

Nope! So now we try the next greatest prime number, 193...

Nope! So now we try the next greatest prime number, 197...

Nope! So now we try the next greatest prime number, 199...

Nope! So now we try the next greatest prime number, 211...

Nope! So now we try the next greatest prime number, 223...

Nope! So now we try the next greatest prime number, 227...

Nope! So now we try the next greatest prime number, 229...

Nope! So now we try the next greatest prime number, 233...

Nope! So now we try the next greatest prime number, 239...

Nope! So now we try the next greatest prime number, 241...

Nope! So now we try the next greatest prime number, 251...

Nope! So now we try the next greatest prime number, 257...

Nope! So now we try the next greatest prime number, 263...

Nope! So now we try the next greatest prime number, 269...

Nope! So now we try the next greatest prime number, 271...

Nope! So now we try the next greatest prime number, 277...

Nope! So now we try the next greatest prime number, 281...

Nope! So now we try the next greatest prime number, 283...

Nope! So now we try the next greatest prime number, 293...

Nope! So now we try the next greatest prime number, 307...

Nope! So now we try the next greatest prime number, 311...

Nope! So now we try the next greatest prime number, 313...

Nope! So now we try the next greatest prime number, 317...

Nope! So now we try the next greatest prime number, 331...

Nope! So now we try the next greatest prime number, 337...

Nope! So now we try the next greatest prime number, 347...

Nope! So now we try the next greatest prime number, 349...

Nope! So now we try the next greatest prime number, 353...

Nope! So now we try the next greatest prime number, 359...

Nope! So now we try the next greatest prime number, 367...

Nope! So now we try the next greatest prime number, 373...

Nope! So now we try the next greatest prime number, 379...

Nope! So now we try the next greatest prime number, 383...

Nope! So now we try the next greatest prime number, 389...

Nope! So now we try the next greatest prime number, 397...

Nope! So now we try the next greatest prime number, 401...

Nope! So now we try the next greatest prime number, 409...

Nope! So now we try the next greatest prime number, 419...

Nope! So now we try the next greatest prime number, 421...

Nope! So now we try the next greatest prime number, 431...

Nope! So now we try the next greatest prime number, 433...

Nope! So now we try the next greatest prime number, 439...

Nope! So now we try the next greatest prime number, 443...

Nope! So now we try the next greatest prime number, 449...

Nope! So now we try the next greatest prime number, 457...

Nope! So now we try the next greatest prime number, 461...

Nope! So now we try the next greatest prime number, 463...

Nope! So now we try the next greatest prime number, 467...

Nope! So now we try the next greatest prime number, 479...

Nope! So now we try the next greatest prime number, 487...

Nope! So now we try the next greatest prime number, 491...

Nope! So now we try the next greatest prime number, 499...

Nope! So now we try the next greatest prime number, 503...

Nope! So now we try the next greatest prime number, 509...

Nope! So now we try the next greatest prime number, 521...

Nope! So now we try the next greatest prime number, 523...

Nope! So now we try the next greatest prime number, 541...

Nope! So now we try the next greatest prime number, 547...

Nope! So now we try the next greatest prime number, 557...

Nope! So now we try the next greatest prime number, 563...

Nope! So now we try the next greatest prime number, 569...

Nope! So now we try the next greatest prime number, 571...

Nope! So now we try the next greatest prime number, 577...

Nope! So now we try the next greatest prime number, 587...

Nope! So now we try the next greatest prime number, 593...

Nope! So now we try the next greatest prime number, 599...

Nope! So now we try the next greatest prime number, 601...

Nope! So now we try the next greatest prime number, 607...

Nope! So now we try the next greatest prime number, 613...

Nope! So now we try the next greatest prime number, 617...

Nope! So now we try the next greatest prime number, 619...

Nope! So now we try the next greatest prime number, 631...

Nope! So now we try the next greatest prime number, 641...

Nope! So now we try the next greatest prime number, 643...

Nope! So now we try the next greatest prime number, 647...

Nope! So now we try the next greatest prime number, 653...

Nope! So now we try the next greatest prime number, 659...

Nope! So now we try the next greatest prime number, 661...

Nope! So now we try the next greatest prime number, 673...

Nope! So now we try the next greatest prime number, 677...

Nope! So now we try the next greatest prime number, 683...

Nope! So now we try the next greatest prime number, 691...

Nope! So now we try the next greatest prime number, 701...

Nope! So now we try the next greatest prime number, 709...

Nope! So now we try the next greatest prime number, 719...

Nope! So now we try the next greatest prime number, 727...

Nope! So now we try the next greatest prime number, 733...

Nope! So now we try the next greatest prime number, 739...

Nope! So now we try the next greatest prime number, 743...

Nope! So now we try the next greatest prime number, 751...

Nope! So now we try the next greatest prime number, 757...

Nope! So now we try the next greatest prime number, 761...

Nope! So now we try the next greatest prime number, 769...

Nope! So now we try the next greatest prime number, 773...

Nope! So now we try the next greatest prime number, 787...

Nope! So now we try the next greatest prime number, 797...

Nope! So now we try the next greatest prime number, 809...

Nope! So now we try the next greatest prime number, 811...

Nope! So now we try the next greatest prime number, 821...

Nope! So now we try the next greatest prime number, 823...

Nope! So now we try the next greatest prime number, 827...

Nope! So now we try the next greatest prime number, 829...

Nope! So now we try the next greatest prime number, 839...

Nope! So now we try the next greatest prime number, 853...

Nope! So now we try the next greatest prime number, 857...

Nope! So now we try the next greatest prime number, 859...

Nope! So now we try the next greatest prime number, 863...

Nope! So now we try the next greatest prime number, 877...

Nope! So now we try the next greatest prime number, 881...

Nope! So now we try the next greatest prime number, 883...

No good. 883 is larger than 881. So we're done reducing.

There you have it! Here's the final answer to 9/100 + 8/9

9
100
+
8
9
=
881
900
© 2014 Randy Tayler