Dr. Gladney's 4th Grade Math Review #1

Addition/SubtractionRounding

100

Add 4,153 + 2,988

7,141

200

Subtract 1,089 - 961

128

300

Round to the nearest thousand 166,742

167,000

400

Add 92,425 + 31,675

124,100

500

Subtract 47,676 - 16,521

31,155

Compare <, >, =

100

289 [       ] 290

<

200

618 [       ] 618

=

300

662,980 [          ] 66,298

>

400

$45.34 [           ] $45.32

>

500

132.879 [             ] 132.972

<

Divide

100

250 divided by 5

50

200

3,600 divided by 4

900

300

There are 81 chairs in 3 equal groups. How many chairs are in each group? 

Hay 81 sillas en 3 grupos iguales. ¿Cuántas sillas hay en cada grupo?

27 chairs

400

How many are in each group and how many are leftover? 195 seeds; 6 planters

¿Cuántas hay en cada grupo y cuántas sobran? 195 semillas; 6 macetas

32 in each group; 3 leftover

500

1,222 divided by 6

203 r 4

Factor Pairs/FactorsPrime/Composite

100

Find the factor pairs for 16

Encuentra los pares de factores para 16

1 x 16, 16 x 1, 2 x 8, 8 x 2, 4 x 4

200

Find the factor pairs for 36

Encuentra los pares de factores para 36

1 x 36, 36 x 1, 2 x 18, 18 x 2, 3 x 12, 12 x 3, 4 x 9, 9 x 4, 6 x 6

300

Write the factors of 28

Escribe los factores de 28

1, 2, 4, 7, 14, 28

400

Is 12 Prime or Composite?

¿12 es primo o compuesto?

Composite because you can do 1 x 12, 2 x 6, and 3 x 4.

Compuesto porque puedes hacer 1 x 12, 2 x 6 y 3 x 4.

500

Is 31 Prime or Composite?

¿31 es primo o compuesto?

Prime because you can only do 1 x 31.

Primo porque solo puedes hacer 1 x 31.

Fractions

100

3/7 + 2/7

5/7

200

13/18 - 4/18

9/18 or 1/2

300

simplify 13/5

simplificar 13/5

2 3/5

400

simplify 16/7

simplificar 16/7

2 2/7

500

Solve and Reduce 12/24 + 8/24

Resolver y reducir 12/24 + 8/24

 5/6