When adding 10 to any two digit number, increase the left digit by 1. For example 20+10= 30. 55+10=65. If a problem says 10+ (a number), you can reverse the order the numbers are in because of the commutative property of addition. Example: 10+50 eqauls 50+10. Both equations equal 60. Also, Rodney would have 39 pieces of fruit since 20+19 is 39.
PLease HELP!
The sum of three odd numbers is an odd number.
A.
3 + 5 + 7 = 15
B.
1 + 2 + 3 = 6
C.
2 + 4 + 8 =14
D.
4 + 5 + 6 = 15
A. 15x+1.25=20
B. 1.25x+15=20
C. 1.25x-15=20
D. 15x-1.25=20