what's 9 + 10? What's 1 + 1? What's 2 + 2? What's 9 * 9? What's 12 * 12? What's 8999000 * 4499000

Answer:9+10 is 19
1+1 is 2
2+2=4
9 * 9 is 81
12 * 12= 144
last one not sure
Step-by-step explanation:
Answer:
9 + 10 = 19
1 + 1 = 2
9 x 9 = 81
12 x 12 = 144
8,999,000 x 4,499,000 = 40,486,501,000,000
Step-by-step explanation:
You can check by using a calculator.
Hope this helped :)