Rounding and Mental Math Quiz

Round 779 to the nearest hundred.

• 700

• 780

• 800

• 880

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round 79 to the nearest ten.

• 70

• 75

• 80

• 90

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round 849 to the nearest hundred.

• 850

• 900

• 800

• 925

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round 63 to the nearest ten.

• 50

• 60

• 65

• 70

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

What is the missing number? 4 + 8 = □ + 4

• 4

• 2

• 6

• 8

Tags

CCSS.1.OA.B.3

What is one way you could find the sum of 32 + 55 using mental math?

• 30 + 50 and 2 + 5

• 30 + 40 and 2 + 10

• 20 + 40 and 2 + 5

• 20 + 50 and 10 + 5

Tags

CCSS.2.NBT.B.5

What is one way you could find the sum of 52 + 36 using mental math?

• 50 + 30 and 2 + 6

• 50 + 20 and 2 + 10

• 40 + 20 and 2 + 6

• 40 + 30 and 10 + 6

Tags

CCSS.2.NBT.B.5

A computer store received a shipment of 75 computers on Monday. By Friday, the store had sold 33 of the computers. How many of the computers had not been sold? Use mental math to solve.

• 108

• 52

• 42

• 32

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

A train left the terminal with 89 passengers. At the first stop, 54 passengers got off the train, and no passengers got on the train. How many passengers were left on the train? Use mental math to solve.

• 25

• 35

• 45

• 143

To subtract 75 – 27 mentally, Joanna subtracted 75 – 30 = 45 first. What should she do next?

• Subtract 45 – 3.

• Subtract 45 – 2.

• Add 45 + 3.

• Add 45 + 2.

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2