Multiplication
2.1 x 100
= 210
Move decimal place twice.
6.5 / 10
= 0.65
Move decimal place once
-7 + 12
= 5
-7 - (-7)
0
0.06 x 1000
= 60
0.07 x 1000
= 70
567/10000
= 0.0567
Move the decimal four to the left.
-32 + (-9)
= -41
4 - (-8) -3
12 -3
= 9
70+ (-32) -20
= 38 - 20
= 18
73 x 64
= 4672
313.32 / 100
= 3.1332
13 + (-15) + (-7)
= -2 -7
= -9
-35 - 21 - (-13)
= -56 - (-13)
= -43
10^4 x 54
=10 000 x 54
= 540 000
5/6 x 2/7
= 10/42
Simplified = 5/21
5/6 / 2/5
= 5/6 x 5/2
= 25/12
5/8 + 3/6
Common denominator is 24
15/24 + 12/24
= 27/24 or 1 3/24
Simplified = 1 1/8
4/9 - 1/5
Common denominator is 45.
= 20/45 - 9/45
= 11/45
10/13 + 1/2
= 20/26 + 13/26
= 33/26 or 1 7/26
-5 3/8 x 1 7/8
-43/8 x 15/8
-645/64
= -10 5/64
20/24 / 6/12
20/24 x 12/6
= 240/144 or 1 96/144
-5 2/3 + 3 2/6
-17/3 + 20/6
Common denominator is 6
-34/6 + 20/6
= -14/6 or -2 2/6
Simplified = -2 1/3
-6 4/8 - (-4 2/5)
= -52/8 + 22/5
Common denominator is 40
= -260/40 + 176/40
= -84/40 or -2 4/40
Simplified = -2 1/10
On a scale of 1 to 10, how much do you like this game?
10