Multiplying with Negative Numbers
Here is a negative number multiplication grid……Can you spot any patterns?
X
-5
-4
-3
-2
-1
0
1
2
-5
-4
-3
-2
-1
0
1
2
3
4
5
Quick Questions…..
2 x -4 =___________
-3 x -5 = ___________
2 x -3 = ___________
-5 x -4 = ___________
-4 x 3 = ___________
-5 x 6 = ___________
-3 x 5 = ___________
-7 x -4 = ___________
5 x -5 = ___________
-5 x -11 = ___________
-3 x -2 = ___________
50 x -2 = ___________
Harder questions….
20 ÷ 4 = ___________
-9 ÷ -3 = ___________
16 ÷ -4 = ___________
21 ÷ -7 = ___________
-9 ÷ 3 = ___________
-28 ÷ -2 = ___________
-20 ÷ -4 = ___________
81 ÷ -9 = ___________
Ms Varcoe @ Penryn College
3
4
5
Multiplying with Negative Numbers
Index questions….
4 x 4 =___________
(-2)2 = ___________
-4 x -4 =___________
62 = ___________
22 = ___________
(-3)2 = ___________
Thinking questions……
When you multiply a positive number and a negative number, is the answer negative or positive?
When you multiply a negative number and a negative number, is the answer negative or positive?
When you divide a negative number by a negative number, is the answer negative or positive?
When you divide a positive number by a negative number, is the answer negative or positive?
Would the answer of (-2)3 be negative or positive?
Would the answer for (-1)4 be negative or positive?
Would the answer for (-1)5 be negative or positive?
To check you haven’t forgotten how to add and subtract
negative numbers complete this magic square…..
Remember, the diagonals, the rows, and the columns must each
add up to the same magic number.
Ms Varcoe @ Penryn College