Unit 2 Review

Solve the following number riddle:

I am a 6-digit number. My 4 is worth 4,000. My 5 is worth 5x10⁵. My 8 is worth 8*10,000.

One of my 2s is worth 20. The other 2 is worth 10 times that much.

My other digit is 1. What number am I?

• 584,221

• 458,221

• 5,488,221

• 224,581

Tags

CCSS.5.NBT.A.1

Solve the following number riddle:

I am a 5-digit number. My 3 is worth 3*10. My 6 is worth 6 [10,000s]. One of my 5s is worth 5,000. The other 5 is worth 1/10 as much. My other digit is a 7. What number am I?

• 36,557

• 65,357

• 65,537

• 55,357

Tags

CCSS.5.NBT.A.1

What is the standard form for this equation:

842 * 10³=

• 842

• 842,000

• 8,420

• 8,420,000

Tags

CCSS.5.NBT.A.2

What is the standard form for this equation:

517 * 10⁵=

• 517,000

• 5,170,000

• 517,000,000

• 51,700,000

Tags

CCSS.5.NBT.A.2

Sam collects paper for recycling. When he has 200 pounds, the recycling center will pick the paper up at his house. Sam has 15 boxes of paper that weigh about 11 pounds each. Should he call the recycling center to arrange a pick-up?​ ​ (a)   ​

• No
• Yes

Tags

CCSS.3.NBT.A.2

CCSS.3.OA.A.3

CCSS.3.OA.C.7

CCSS.3.OA.D.8

Which of these are the number 5,701,223 in expanded form? Choose all that apply.

• 5,000,000 + 700,000 + 1,000 + 200 + 20 + 3
• (5x1,000,000) + (7x100,000) + (1x1,000) + (2x100) + (2x10) + (3x1)

• 5,000,000 + 700,000 + 1,000 + 200 + 20 + 30
• 5 millions + 7 hundred thousands + 1 thousand + 2 hundreds + 2 tens + 3 ones

• 5[1,000,000s] + 7[10,000s] + 1[1,000s] + 2[100s] + 2[10s] + 3[1s]

Tags

CCSS.5.NBT.A.1

Which expression matches the number story?:

Dylan is putting a small wire fence around his spice garden.

The length around his garden is 7 inches short of 19 feet.

What is the length around his spice garden in inches?

• (19x12)-7

• (19x12)+7

• (19÷3)-7

• (19÷12)-7

Tags

CCSS.5.MD.A.1

CCSS.5.OA.A.1

CCSS.5.OA.A.2

Which is the best estimate for this problem?

549 * 7 = ?

• 550 x 7 = 3,500

• 600 x 10 = 6,000

• 500 x 7 = 3,500

• 500 x 10 = 5,000

Tags

CCSS.4.NBT.A.3

CCSS.4.NBT.B.5

549 * 7 = ?

• 3,863

• 3,843

• 3,500

• 352,863

Tags

CCSS.5.NBT.B.5

Which is the best estimate for this problem:

62 * 23 = ?

• 60 x 30 = 1,800

• 60 x 20 = 1,200

• 100 x 20 = 2,000

• 50 x 30 = 1,500

Tags

CCSS.4.NBT.A.3