You do 2x20 which is basically 2x2 (4) add a zero and your answer is 40
Answer:
4500
Step-by-step explanation:
The answer is BC + CD = BD
Answer:
-9
Step-by-step explanation:
+49/-7=-7
-2-7=-9
-2 pennies, 4 nickels, 4 dimes
-2 pennies, 4 nickels, 3 dimes
-2 pennies, 4 nickels, 2 dimes
And so on. Do you kind of get the idea?
