Addition, Subtraction and Estimation Review

Addition, Subtraction and Estimation Review

Estimation

Used when the question does not require an exact number. Look for these clue words:

Multiple Choice

Maribel had 632 nickels. Laura had 278 nickels. Which number sentence shows the best way to estimate how many more nickels Maribel has than Laura?

• 600-300

• 600-200

• 600+300

• 600+200

Addition

The key to addition problems:

Find your important numbers

Look for clue words that tell you to add

Line up your place values correctly

Multiple Choice

Phil and Bill are rich. Phil has $537. Bill has $619. If they combine their money, how much money will they have in total?

• $1156
• $1056
• $1146
• $1046

Multiple Choice

The Marquez family went on a family road trip over the summer.  They drove 322 miles from Raleigh, NC to Savannah, GA.  Then they drove another 280 miles from Savannah, GA to Orlando, FL.  How many miles did they drive during their road trip?

• 602
• 502
• 612
• 631

Multiple Choice

Ava had 125 toy cars and 158 figurings. Then she was given 54 stuffed animals. How many items did she have altogether?

• 285

• 180

• 280

• 337

Subtraction

Keys to Subtraction:

• Look for key words that show subtraction
• Always put the larger number on top
• Subtract down, borrow if you need to

Subtract Across Zeros Strategy 1

Subtract Across Zeros Strategy 2

Multiple Choice

800 - 579 =

• 331

• 231

• 221

Multiple Choice

A movie theater sold 692 tickets to the evening show. It sold 385 tickets to the afternoon show. How many more tickets were sold for the evening show than the afternoon show?

• 207
• 217
• 307
• 317

Multiple Choice

400 - 165=

• 365

• 345

• 235

Multiple Choice

The office operating expenses of a company amount to $2,340 a month. The previous month the expenses amounted to $1,985. What is the increase in the expenditure to the company this month?

• $355
• $2,645
• $1,465