Adding/Subtracting Rounding Review

Write the numbers that make this equation true.

(7 + 2) + 4 = 7 + ( ___ + 4)

Tags

CCSS.1.OA.B.3

The sum of any two numbers is the same no matter which number comes first.

• True

• False

Tags

CCSS.1.OA.B.3

Round 457 to the nearest ten.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round 231 to the nearest ten.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Is the sum of two odd numbers odd or even?

• Odd

• Even

Tags

CCSS.3.OA.D.9

Round 431 to the nearest hundred.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round 789 to the nearest hundred.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round 550 to the nearest hundred.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Find the sum of 321 + 109 + 54

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Choose all the equations that show a reasonable estimate for 231 + 289.

• 250 + 250 = 500

• 200 + 300 = 500

• 230 + 290 = 520

• 240 + 280 = 520