This applet uses the rule of signs to multiply two integers
Use the applet to multiply integer numbers between -5 and 5[br][br]Ricardo García Mesa, matesytic@gmail.com
[size=150][size=200]4 x 2 = 8[br]-4 x (-2) = 8[br][br]When the signs are the SAME, the answer will be...[/size][/size]
[size=200]-4 x 2 = -8[br]-2 x 4 = -8[/size][br][br][size=200]When the signs are DIFFERENT, the answer will be...[/size]
[size=200]Write [b]+[/b] if answer will be POSITIVE. [br]Write [b]-[/b] if answer will be NEGATIVE. [br][br]Extension: answer the questions![/size]
[size=200]1) [/size][size=200]2 x 1 =[/size]
[size=200]2) [/size][size=200]2 x (-1) =[/size]
[size=200]3) -5[/size][size=200] x 5 =[/size]
[size=200]4) -5[/size][size=200] x (-5) =[/size]
[size=200]5) [/size][size=200] 12 ÷ 2 =[/size]
[size=200]6) [/size][size=200] -12 ÷ 2 =[/size]