General Rules
(+) x (+) =
(+) or positive
-9 ÷ 1.5
-6
-5/8*1/2
-5/16
(-9)(12)
-108
What has hands but cannot clap?
A clock
(+) x (-) =
-
-0.8 x (-1.1)
-0.88
-4/11-:2/7
-1 3/11
-56 ÷ 6
-7
I am an odd number. Take away a letter, and I become even. What number am I?
Seven
Tell whether the expression is positive or negative without evaluating.
-3/10 * (-8/15)
positive
-0.3 * 5/6
-1/4
-3/5*2 2/7
-1 13/35
-6 * (-3) * (-6)
-108
I am a two-digit number. My digits add up to 9. If you reverse my digits, the new number is 27 greater than me. What number am I?
36
How is multiplying and dividing rational numbers similar to multiplying and dividing integers?
The same rules for signs of integers are applied to rational numbers.
-9.01 x (-0.2)
1.802
-1 5/6-:4 1/6
-11/25
During the game, one unlucky player had to move back 6 spaces 7 turns in a row. Find a number to represent that player's movements for those 7 turns.
-42
What can travel around the world while staying in the same corner?
A stamp
Tell whether the expression is positive or negative without evaluating.
-6/5-:(-1/2)*6.3*(-0.6)-:2/3*7 7/8-:100
negative
24.75 ÷ 0.5
49.5
3 9/10*(-2 2/3)
-10 2/5
(7)*(-8)*(-2)
112
How can you make this equation true by adding just one straight line? You cannot erase or move anything. 5 + 5 + 5 = 550
545 + 5 = 550