There are 547 cookies in Mr. Dobbs' bakery.
A third grade class buys 169 cookies.
Mr. Dobbs wants to use mental math to figure out how many cookies he has left.
First, he subtracts 100 from 547. Then he subtracts 40 from 447.
What should his next step be?
A.
Subtract 7 from 407.
B.
Subtract 20 from 407.
C.
Subtract 40 from 407.
D.
Subtract 9 from 407.
what
a b c or d
A.
Subtract 7 from 407.
B.
Subtract 20 from 407.
C.
Subtract 40 from 407.
or
D.
Subtract 9 from 407.
D. Subtract 169 from 407.
To answer this question, you need to follow the steps provided by Mr. Dobbs. First, he subtracts 100 from 547, which leaves him with 447 cookies. Then he subtracts 40 from 447.
To figure out what his next step should be, you need to determine how many cookies are left after subtracting 40 from 447.
Thus, the correct next step would be to subtract 40 from 447, which would result in 407 cookies being left.
Therefore, the answer is C. Subtract 40 from 407.
C. Subtract 40 from 407.
After subtracting 100 and 40 from 547, Mr. Dobbs has 407 cookies left. The next step would be to subtract the number of cookies the third grade class bought, which is 169.
I apologize if my previous response was unclear.
To answer the original question, the next step for Mr. Dobbs to use mental math and figure out how many cookies he has left would be to subtract the number of cookies the third grade class bought, which is 169.
Therefore, the correct answer to the multiple-choice question would be:
D. Subtract 169 from 407.