Equations
PEMDAS
4 operations
Fractions and Decimals
Various
100

9 = m + 49 

9 = m + 49 

m = −40


100

((−7) + (−9) − 8) ÷ (−8)


((−7) + (−9) − 8) ÷ (−8) = ((−16) − 8) ÷ (−8)

= (−24) ÷ (−8) =3


100

16× 5 =

32- 15 =

19× 15 = 

15× 17 = 

13+ 6 =

16× 5 =80

32- 15 =17

19× 15 = 285

15× 17 = 255

13+ 6 =19



100

3/5 : 9/10 = 

2/4 x 4/15 =

2/4 + 2/19 =

3/5 : 9/10 = 2/3

2/4 x 4/15 = 2/15

2/4 + 2/19 = 23/38

100

Before Cam broke his right arm, he was able to type 9 words per minute on his phone. After he broke his arm, he had to use his left hand for a while, and he could only type 6 words per minute. What is the difference between the number of words he could type in 5 minutes before and after he broke his arm.

Before Cam broke his right arm, he was able to type 9 words per minute on his phone. After he broke his arm, he had to use his left hand for a while, and he could only type 6 words per minute. What is the difference between the number of words he could type in 5 minutes before and after he broke his arm.

9 words per minute x 5 minutes = 45 words; 6 words per minute x 5 minutes = 30 words; 45 words – 30 words = 15 words difference


200

−88 = −150 − x 

−88 = −150 − x 

x = −62


200

(−10) × (8 − 3) ÷ (−2)

(−10) × (8 − 3) ÷ (−2) = (−10) × 5 ÷ (−2)
= (−50) ÷ (−2)
= 25


200

9-1=

20× 1 = 

133÷7= 

20+ 3 = 

192÷12=

9-1=8 

20× 1 =20 

133÷7=19 

20+ 3 =23 

192÷12=16


200

2/3 - 2/8 = 

4/7 + 2/16 = 

2/6 - 1/5 = 

4/10 : 1/2 =

4/7 - 2/6 = 

2/3 - 2/8 = 5/12

4/7 + 2/16 = 39/56

2/6 - 1/5 = 2/15

4/10 : 1/2 = 4/5

4/7 - 2/6 = 5/21

200

What is 51% of 200? 

What is 71% of 1,000? 

What is 13% of 100? 

What is 9% of 200? 

What is 17% of 600? 


What is 51% of 200? 102

What is 71% of 1,000? 710

What is 13% of 100? 13

What is 9% of 200? 18

What is 17% of 600? 102



300

118−p = 60 

118−p = 60 

p=58


300

((−8) + 2) × (5 ÷ (−5))

((−8) + 2) × (5 ÷ (−5)) = (−6) × (5 ÷ (−5))

= (−6) × (−1) =6


300

348 − 199 =

595 + 215 = 

966 - 246 =

457 - 309 =

985 + 606 =

348 − 199 = 149

595 + 215 = 810

966 - 246 = 720

457 - 309 = 148

985 + 606 = 1591

300

4.188698 ÷ 6.001 = 

0.22 ÷ 0.044 = 

7.15312 ÷ 0.247 = 

0.5307 ÷ 6.1 = 

0.062328 ÷ 0.742 = 


4.188698 ÷ 6.001 = 0.698

0.22 ÷ 0.044 = 5

7.15312 ÷ 0.247 = 28.96

0.5307 ÷ 6.1 = 0.087

0.062328 ÷ 0.742 = 0.084



300

In Science class, Sara needed 8 test tubes for 3 different experiments. The first experiment required 2 test tubes and the other two experiments required the same number of test tubes. How many test tubes were needed for each of the other two experiments?

In Science class, Sara needed 8 test tubes for 3 different experiments. The first experiment required 2 test tubes and the other two experiments required the same number of test tubes. How many test tubes were needed for each of the other two experiments?

8 test tubes – 2 test tubes = 6 test tubes; 6 test tubes divided by 2 = 3 test tubes for each of the other experiments


400

3c−6=21 

3c−6=21 

c=9


400

(6 − (−8) + 10) × 3

(6 − (−8) + 10) × 3 = (14 + 10) × 3 = 24 × 3 =
= 72


400

435 x 72 =

325 x 54 = 

804 x 79 = 

908 x 47 =

905 x 0 =

435 x 72 = 31 320

325 x 54 = 17 550

804 x 79 = 63 516

908 x 47 = 42 676

905 x 0 = 0

400

44.99 × 55.5 = 

30.9 × 0.2 = 

9419.4 × 6.1 = 

9.92 × 4621.6 = 

669.2 × 0.49 = 

44.99 × 55.5 = 2496.945

30.9 × 0.2 = 6.18

9419.4 × 6.1 = 57458.34

9.92 × 4621.6 = 45846.272

669.2 × 0.49 = 327.908


400

Start Date is Aug 23, 2006

Elapsed Time is 9 years 4 months 3 weeks 4 days

WHAT IS End Date?

Start Date is Aug 23, 2006

Elapsed Time is 9 years 4 months 3 weeks 4 days

End Date is Jan 17, 2016


500

7z=63 

7z=63 

z=9


500

2×(3^3 −5+8)

2×(3^3 −5+8)
= 2 × (27 − 5 + 8) = 2 × (22 + 8)
= 2 × 30
= 60


500

536 : 36 = 

825 : 43 =

912 : 22 =

71070 : 690 =  

5208 : 7 =

1872 : 4 = 

2853 : 9 =

6300 : 7 =

536 : 36 = 14 r 32

825 : 43 = 19 r 8

912 : 22 = 41 r 10

71070 : 690 =  103

5208 : 7 = 744

1872 : 4 = 468

2853 : 9 = 317

6300 : 7 = 900

500

134.5 + 426.2 = 

60.04 + 589.95 = 

510.70 + 0.065 = 

54.11 −0.3 = 

29.40 −0.183 = 

134.5 + 426.2 = 560 .7

60.04 + 589.95 = 649 .99

510.70 + 0.065 = 510 .765

54.11 −0.3 = 53.81

29.40 −0.183 = 29.217

500

Round each Euro amount to the nearest 10 cents. The ≈ sign means approximately equal to.

e8.66 ≈ 

e8.82 ≈ 

e3.24 ≈ 

e9.16 ≈ 

e2.24 ≈ 



Round each Euro amount to the nearest 10 cents. The ≈ sign means approximately equal to.

e8.66 ≈ e8.70 

e8.82 ≈ e8.80 

e3.24 ≈ e3.20 

e9.16 ≈ e9.20 

e2.24 ≈ e2.20