Question

VSabina wants to subtract 451 – 98 mentally. First Sabina adds 2 to 98 to get 100.

What should Sabina’s next step be? What is the difference?
A.


Add 9 to 451. The difference is 360.
B.


Subtract 2 from 451. The difference is 349.
C.


Add 2 to 451. The difference is 353.
D.


Subtract 100 from 451. The difference is 351.

Answer 1

D. subtract 100 from 451. Eventually she would also need to subtract 2from 351 to get 349.