Adding directed numbers
-15+(-10)=
-25
7-(-4)=
11
-7 x 10=
-70
-35-10+50=
5
-25+30=
5
1.7-(-4)=
5.7
-5 x -8 = ?
40
Which has a greater value, a or b?
a= (15-4) x -7=
b= (-7 x -9) +14=
b
Tina says -12 x -12 x -5 is -720, but Sarah says -12 x -12 x -5 is 720. Who's right? Explain.
Tina
-3+(-2)+1=
-4
-12-(-12)=
0
? x (-8) = 24
-3
4 x (-13)+20=
-32
Mike wants to buy a Physics book costing $600. He has $475.25 only in his purse. How much more money does he need to purchase the book?
124.75
-2.8+(-5.3)=
-8.1
5.3-(-3.4)=
8.7
-4.2 x -5=
21
(-18 x ?) + 2= 20
-1
At night the temperature is -3 Celsius and then rises by 15 Celsius during the day. What is the temperature in the daytime?
12
15+(-7.5)+0.5=
8
16-6-(-7.1)=
17.1
-30 div-9
10/3 3 1/3
(4 x 3 + 10 x 2)/8 =
4
There are 19.3 cups of flour in a bag. The chef uses 2.9 cups for making cookies. Then, he uses 1.2 cups of sugar and 5.1 cups of flour for making banana bread. How many cups of flour are left?
11.3 cups of flour left