This is cool 2 10s are 20, half of 4 is 2. The trick is to take one of the 2s off one of the tens then add the other 2 to the other 10. 10-2=8 and 10+2=12 Now 8+12 = 20 and the difference is 4
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Difference. A sum is the result of adding two numbers, and a difference is the result of subtracting two numbers.
Two numbers with a sum of 4 and a difference of 9 are -6.5 and 2.5.
5,3
4 + 5 = 9 4 and 5 are two numbers with the sum of 9 and have a difference of 5
17 and 3 are two prime numbers whose sum is 20. Their product is 51.