If henry’s family is moving to texas and the total drive is 952 miles and they drove 350 miles the first day and 105.5 miles a second day and 200.25 miles the third day how much more do they need to drive

296.25 more miles.

Step-by-step explanation:

If you subtract 350, 105.5, and 200.25 from 952, you get 296.25.

-20

Step-by-step explanation:

My math teacher taught me a trick when working with negative numbers: Same, Change, Change.

Basically, the first number is kept the same, the operation (in this case, the plus sign) is changed to its opposite, and the third number is changed to its inverse.

So, in this case:

-4+(-16)

-4-16

The plus sign was changed to a subtraction sign and -16 was changed to 16.

This trick works with problems like these. It's helped me a lot.

-4-16= -20

If you're still confused, I've always liked to think of it as 4+16=20. Then just put  a negative sign in the front. So, -20.

Hope this helped!