Mental Math
Rounding
Divide by 1 digit divisors
Interpret Remainders
Factor Trees
100

800 / 8 =

100

100

305 / 3 = 

300 / 3 = 100

100

180 / 4 = 

45

100

Jasmine has 42 DVDs. She is putting them in cases that hold 8 DVDs. How many cases can she fill? How many DVDs will be left?

5 cases, 2 DVDs

100

5

1, 5

200

150 / 3 =

50

200

410 / 4 = 

400 / 4 = 100

200
108 / 6 = 

18

200

How many 10-pack juice boxes must Daniel’s mom buy if she plans to serve 1 juice pack to each of the 42 people who will attend the camp picnic?

5 packs

200

18

3 x 3 x 2

300

420 / 6 =

70

300

589 / 6 = 

600 / 6 = 100

300

158 / 4 =

39 r2

300

 A restaurant made 142 pancakes.  Each serving had 3 pancakes on a plate.  How many full servings were there?

47 full servings

300

12

2 x 2 x 3

400

3,200 / 8 = 

400

400

620 / 9 = 

630 / 9 = 70

400

165 / 4 =

41 r1

400

The 27 students in the chorus and 6 teachers are going to a song festival. Each small bus holds 8 people. How many buses will be needed to transport them all?

4 buses

400

27

3 x 3 x 3

500

56,000 / 7 = 

8,000

500

1,290 / 6 =

1,200 / 6 = 200

500

319 / 3 = 

106 r1

500

 Cupcakes come in packages of 12.  There are 20 people attending my birthday party.  How many packages should I buy?

2 packages

500

24

3 x 2 x 2 x 2

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