Math Review--2nd Grade

Addition Sentence

100

3 + ___ = 7

4

200

8 + ___ = 13

5

300

16 + ___ = 24

8

400

25 + ___ = 35

10

500

85 + ___ = 100

15

Skip Count

100

3, 6, 9, 12, 15, ___

18

200

4, 8, 12, ___

16

300

6, 12, 18, ___

24

400

7, 14, 21, 28, ___

35

500

9, 18, 27, 36, ___

45

Subtraction

100

9 - 4 = ___

5

200

15 - 12 = ___

3

300

22 - 12 = ___

10

400

65 - 30 = ___

35

500

640 - 500

140

Rule: + 5

100

6

11

200

9

13

300

12

17

400

27

32

500

86

91

Fractions

100

There are 10 marbles.  6 of the marbles are blue.  What is the fraction of blue marbles?

6/10

200

There are 8 pens and 3 are red.  What fraction of the pens are red?

3/8

300

There are 15 leaves.  3 are red, 6 are orange.  The rest of the leaves are yellow.  What fraction of the leaves are yellow?

6/15

400

There are 4 brown cows, 2 black cows and 6 horses in the field.  What fraction of the animals are cows?

6/12

500

Of the 16 crayons in the big box, there are 5 light blue, 5 dark blue and six red crayons.  What fraction of the crayons are some shade of blue?

10/16