3rd Grade Addition and Estimating Sums

Estimate the sum of 345 and 278 by rounding to the nearest hundred.

• C) 500

• B) 700

• D) 800

• A) 600

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CCSS.2.NBT.A.1

CCSS.2.NBT.B.7

CCSS.2.NBT.B.8

Estimate the sum of 432 and 567 by rounding to the nearest hundred.

• B) 900

• C) 1100

• D) 800

• A) 1000

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CCSS.2.NBT.B.7

CCSS.2.NBT.B.8

Find the the sum of 2,345 and 6,789.

• D) 9,131

• C) 9,132

• B) 9,134

• A) 9,133

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CCSS.2.NBT.B.7

If Jon has 345 marbles and Malone gives him 278 more, how many marbles does John have in total?

• A) 543

• B) 567

• A) 623

• C) 489

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CCSS.2.NBT.A.1

CCSS.2.NBT.A.3

CCSS.2.NBT.B.7

CCSS.2.OA.A.1

Jameson has 432 Pokémon cards and then he buys 567 more. How many cards does he have in total?

• B) 899

• C) 1100

• A) 1000

• A) 999

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CCSS.2.NBT.A.1

CCSS.2.NBT.A.3

CCSS.2.NBT.B.7

CCSS.2.OA.A.1

What is the sum of 2,345 and 6,789?

• A) 9,134

• B) 9,133

• D) 9,131

• C) 9,132

Tags

CCSS.2.NBT.B.7

A donut shop sold 4,567 in February and 1,234 donuts in March. How many donuts did the store sell in both months combined?

• 5,801

• 5,790

• 5,789

• 5,791

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CCSS.2.NBT.A.1

CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

CCSS.2.OA.A.1

A gaming system is on sale for $239. A game for the system is on sale for $29. How much does the game system and the game cost altogether?

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CCSS.2.MD.C.8

CCSS.2.NBT.B.5

CCSS.2.NBT.B.6

CCSS.2.NBT.B.7

CCSS.2.OA.A.1

Emberlynn took 137 pictures last week with her new camera. This week, she took 78 pictures. How many total pictures has she taken?

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CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

CCSS.2.OA.A.1