Joke Collection Website - Talk about mood - There is no calculation. Can you judge whether the following calculation is correct? Tell me your reasons. 0.9x 1.5= 13.5 9.9x7

There is no calculation. Can you judge whether the following calculation is correct? Tell me your reasons. 0.9x 1.5= 13.5 9.9x7

0.9≈ 1

0.9× 1.5≈ 1× 1.5= 1.5

13.5 is much more than 1.5.

So 0.9x 1.5 = 13.5 is wrong.

9.9≈ 10

9.9×7. 1≈ 10×7. 1=7 1

So 9.9×7. 1=60.29 is wrong.

1.5> 1

The product should be greater than 2.8, so 2.8× 1.5=2.4 is wrong.