Number Sense 4-8 Week 8

4-5 Random

100

Round 87,538 to the nearest thousand's place

What is 88,000 (538 is > 500, so round up)

200

 63 xx 25 = 

What is 1575?

300

7 + 9 + 11 + 13 +15 + 17 =

What is 72? (take the middle 12 and multiply it times number of terms (6))

400

104 -: 13 =

What is 8?

500

 7/12 + 1/12 = 

What is 

8/12 = 2/3

4-5 Random

100

(2 x 10) + (4 x 1000) + (5 x 100) =

What is 4,520?

200

171 + 399 =

What is 570?

300

13 is to 12 as _____ is to 144?

What is 156? (13 x 12)

400

Which is smaller 

1/5 or 1/8

What is 

1/8 

500

2.4 -: 0.5 =

What is 4.8?

Squares (4-5 100-300)

100

sqrt 144

What is 12?

200

13^{2 =}

What is 169?

300

sqrt 361

What is 19?

400

22²

What is 484?

500

 sqrt 445567  (estimate within 5%)

635-700 (667.51 actual)

6-8 Random

100

 2/3 xx 3/8 = 

What is 

6/24 = 1/4

200

3 weeks = ______ days

What is 21 days?

300

The LCM of 15 and 21 is? (LCM(15,21))

What is 105? 

15! = 5 x 3 x 1 

21! = 3 x 7 x 1

5 x 3 x 7 x 1 = 105

400

32 quarters and 16 dimes = $_________

$9.60 (32 x .25 = $8.00 + 16 x .10 = $1.60)

500

14³ (estimate within 5%)

What is 2744? (14 x 14 x 14)

6-8 Random

100

47 x 53 =

What is 2491?

200

What number added to sixteen is sixty-one?

What is 45? 61-16=45

300

 8 1/4 - 5 1/2 = 

What is 

2 3/4

400

The surface area of a Rubiks Cube having 3 cubes wide where each cube is 1cm x 1cm x 1cm = _____  cm²

What is 54cm²? (6 sides x 9cm² )

500

If 8 tacos cost $6.32, then 12 tacos would cost?

What is $9.48? (6.32 / 8 * 12)