218+9=218+(10-1)=228-1=227218+99=218+(100-1)=318-1=317is:117+9=________117+99=_________423+9=________423+99=________
126,216
432,522
117+9=117+(10-1)=127-1=126117+99=117+(100-1)=217-1=216423+9=423+(10-1)=433-1=432423+99=423+(100-1)=523-1=522
Complete the Tables
Pair
Factors
Factors: Same/Different
Like/Unlike terms
8x15y
8,x15,y
Different
Unlike
-4ab7ba
5x2y9xy2
Add the following lengths:
kmmcm
16 800 25
+25 200 80
____________________________
Study the following pattern and write the next three steps.
1x9=911x9=99
Consider the following statements. Let A={1,2,3,4}and B={5,7,9}
1.A×B=B×A2.n(A×B)=n(B×A)