Colegio Gimnasio Campestre San Sebastin CORRECCIN DE LAS GUAS

7 GRADO

MATH WORKSHEET

INDIVIDUAL WORK

1. After 7.

2. Three million.

3. Five million, six hundred twenty eight thousand, four hundred seventy one.

4. False.

5. 87450054

TEAM WORK

1. 800 + 1200 = 2000 dollars.

2. 150 + 50 + 100 = 300 dollars.

3. 20 - 8 = 18 dollars.

4. 15258 - 12456 = 2802.

5. 4 x 3 = 12 bookcases.

6. 50 14 = 700 miles.

HOMEWORK

1. 1063 + 305 = 1368.

2. 5.56 - 3 .42 = 2.14 dollars .

3. 1 year = 52 weeks. Thus, 500 52 = 26,000 dollars

SCIENCE WORKSHEET

INDIVIDUAL WORK

Fill in the missing words. Fill in one letter for each blank. Use the numbered letters to answer the riddle below.

1. A blood vessel that carries blood back to the heart is a(n) VEIN.

2. A liquid that softens and moistens food in the mouth is SALIVA.

3. An organ that filters wastes from blood in the kidneys is a(n) NEPHRON.

4. A blood vessel that carries blood away from the heart is a(n) ARTERY.

5. The two organs that fill up with air when you inhale are the LUNGS.

6. The muscular organ that changes food into a thick, soupy liquid is the STOMACH.

7. The muscular organ that pumps blood throughout the body is the HEART.

8. The organ that stores liquid wastes from the kidneys temporarily is the BLADDER.

Riddle: Who Are We? We are made of body parts that have different jobs ORGAN SYSTEMS.

TEAM WORK

1. The circulatory system is a transport system that brings materials to and from your bodys organs, tissues, and

CELLS.

2. The circulatory system is made up of the HEART, VEINS and ARTERIES.

3. Blood from the heart is pumped into ARTERIES , which carry the blood mixed with oxygen from the heart to

the body.

4. Oxygen and nutrients pass from the blood to the bodys tissues through the thin walls of the CAPILLARIES.

5. The VEINS take the blood that carries carbon dioxide back from the body to the heart.

6. The blood is pumped to the LUNGS, where carbon dioxide is exhaled, and oxygen is inhaled.

7. The heart, a fist-sized muscle, is located behind a bone called the STERNUM in the center of your chest.

8. PERICARDIUM a protective sac of tissue, surrounds the heart.

9. Each side has two chambers; the upper chamber, or ATRIUM, and the lower chamber, or VENTRICLE.

10. Blood coming from the body is CARBON DIOXIDE poor and OXYGEN rich.

11. The heart pumps the blood to the lungs through the ARTERY.

12. Blood comes back from the lungs to the left side of the heart through the VEIN.

13. Blood leaves the heart through the AORTA, an artery, and is pumped to the body.

14. The heart has VALVES that automatically close to stop blood from flowing in the wrong direction.

15. RED BLOOD CELLS carry oxygen and carbon dioxide to and from the lungs and the rest of the body.

16. WHITE BLOOD CELLS are large blood cells that fight germs entering the body; they also break down dead

cells.

17. PLATELETS are cell fragments that prevent blood from leaking through capillaries.

Unscramble the words using the hints, then solve the puzzle.

1. The upper chamber of the heart is called the ATRIUM.

2. The lower chamber of the heart is called the VENTRICLE.

3. Blood is CARBON DIOXIDE poor coming into the right side of the heart from the body.

4. PLATELETS are part of the blood formed of small cell fragments. They form clots to stop bleeding.

5. ARTERIES are thick-walled blood vessels that carry blood away from the heart.

6. CAPILLARIES are tiny blood vessels that have walls thin enough for carbon dioxide and oxygen to be

exchanged. A strong cardiovascular system is developed through regular EXERCISE.