Add Subtract Decimals Review

Find the difference between the greatest and the least means to __.

• add the greatest and least

• subtract the greatest and least

• tell what is different about the greatest and least

• tell what is the same about the greatest and least

What is the sum of items Sam bought at a store means to find ___.

• the number of items Sam bought

• the average value of items purchased

• the cost of each item Sam bought

• total value of items purchased

When you round 43.12 to the nearest whole number, which number do you keep or change?

• 4

• 3

• 1

• 2

Round 43.12 to the nearest whole number

• 43

• 44

• 43.1

• 43.2

Round 53.45 to the nearest tenth

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When you round 53.45 to the nearest tenth, which number will you keep or change?

• 5

• 3
• 4
• 5

Round 53.45 to the nearest tenth

• 53.5
• 53.55
• 53.6
• 53.4

How do you find the exact perimeter of a shape?

• Multiply the lengths of all 4 sides of the shape.

• Add up the lengths of all 4 the sides of the shape.

• Add up the lengths of 2 sides of the shape.

• Multiply the lengths of 2 sides of the shape.

How do you find an estimated perimeter of a shape?

• Add up the lengths of 2 sides

• Round the lengths of 2 sides first then add up the rounded lengths of 2 sides

• Round the lengths of 4 sides first then add up the rounded lengths of 4 sides

• Add up the lengths of all 4 sides

What are key words that tell you to round numbers? Choose all that are correct.

• exact and precise
• about

• approximate and estimate

• round and approximately