Calculate mentally, using adjustment. Write down a sequence of numbers indicating intermediate steps in your thought process. The first one is done for you.
(a) Think
(b)
©
(d)
(a) Note that .
Thus, to find using adjustment, think ,

Ask by Ruiz Fuentes. in the United States

Mar 30,2025

Question

Calculate mentally, using adjustment. Write down a sequence of numbers indicating intermediate steps in your thought process. The first one is done for you.
(a) Think
(b)
©
(d)
(a) Note that .
Thus, to find using adjustment, think ,

Ask by Ruiz Fuentes. in the United States

Mar 30,2025

UpStudy AI · Accepted Answer

**(b) $$197+366$$**  
We can adjust by adding $$3$$ to $$197$$ and subtracting $$3$$ from $$366$$:  
$$
197+366,\quad (197+3)+(366-3)=200+363,\quad 200+363=563
$$

**(c) $$506-359$$**  
We can adjust by recognizing that $$359$$ is $$360-1$$. Subtract $$360$$ first and then add back $$1$$:  
$$
506-359,\quad 506-360,\quad 146,\quad 146+1=147
$$

**(d) $$773-202$$**  
Subtract $$200$$ first and then subtract $$2$$:  
$$
773-202,\quad 773-200,\quad 573,\quad 573-2=571
$$
**(b) $$197+366 = 563$$** **(c) $$506-359 = 147$$** **(d) $$773-202 = 571$$**

Calculate mentally, using adjustment. Write down a sequence of numbers indicating intermediate steps in your thought process. The first one is done for you.
(a) Think
(b)
©
(d)
(a) Note that .
Thus, to find using adjustment, think ,

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Calculate mentally, using adjustment. Write down a sequence of numbers indicating intermediate steps in your thought process. The first one is done for you. (a) Think (b) © (d) (a) Note that . Thus, to find using adjustment, think ,

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Latest Arithmetic Questions

Calculate mentally, using adjustment. Write down a sequence of numbers indicating intermediate steps in your thought process. The first one is done for you.
(a) Think
(b)
©
(d)
(a) Note that .
Thus, to find using adjustment, think ,