Bones & Muscles Math
A newborn baby has around 300 bones. As a person grows, some of these bones fuse together. An adult typically has 206 bones. Use a comparison symbol to show whether a newborn or an adult has more bones
300 > 206 or 206 < 300
The brain sends messages very quickly! If one message travels 152 millimeters in one second and another travels 135 millimeters in the next second, how much farther did the first message travel?
152-135=17 millimeters
The human tongue is covered in taste buds, and each taste bud contains taste receptor cells. One person might have 9, 182 taste buds, another 7, 635, and a third 8, 491. Order the number of taste buds for these three individuals from least to greatest.
7, 635 < 8, 491 < 9, 182
Three students measured the circumference of their wrists:
Maya's wrist is 145 mm around.
Ethan's wrist is 152 mm around.
Zoe's wrist is 138 mm around.
Use >, <, or = to compare Ethan's wrist measurement to Maya's wrist measurement.
152 > 145
Ethan's wrist > Maya's wrist
The longest bone in the human body, the femur can be about 500 millimeters long in an adult. The smallest bone, in the ear, is about 3 millimeters long. What is the difference in length between the longest and the shortest bone in millimeters?
500mm-3mm=497mm
Three different areas of the brain are involved in processing information at different rates. Area X can process approximately 27, 159 bits of information per second. Area Y can process about 41, 823 bits per second, Area Z can process roughly 15, 937 bits per second. Order these processing rates from slowest to fastest
15, 937 < 27, 159< 41, 823
(Area Z < Area X < Area Y)
112 + 85 = 197 shades
Three friends measured the length of their legs from hip to ankle:
Max's leg is 870 mm long
Jade's leg is 860 mm long
Henry's leg is 875 mm long.
Order the leg lengths from longest to shortest.
875mm, 870mm, 860mm
A scientist is studying the muscles in a human leg. She counts 65 muscles in one leg and 64 muscles in the other leg. What is the total number of muscles in both legs?
65+64=129 muscles
A scientist is counting brain cells under a microscope. She counts 234 cells in one view and 153 cells in another view. Round each number to the nearest ten.
234 rounds to 230
153 rounds to 150
Sound travels in waves. If one sound wave is 567 millimeters long and another is 342 millimeters long, what is the difference in their lengths?
567 - 342 = 225 millimeters
Two friends are comparing the lengths of their feet. One friend's foot is 21 centimeters long, and the other friend's foot is 19 centimeters long. What is the total length of their feet if you put them end- to- end?
21 cm + 19 cm = 40 cm
Imagine a skeleton has 206 bones. If 5 bones are removed and then 12 more bones are added (perhaps from a model), how many bones would the skeleton have then?
206-5=201 bones
201+12=213 bones
Nerve impulses have two types of neurons. The first type can transmit a signal at a speed of 125 meters per second. The second type can transmit a signal at 375 meters per second. How much faster is the second signal type than the first signal type?
375 meters - 125 meters = 250 meters
A student is reading a book about vision problems. One page says that 345 people in a town wear glasses and 123 people wear contact lenses. Round each number to the nearest hundred.
345 rounds to 300
123 rounds to 100
Three friends measured the lengths of their arms:
Elena's arm is 62 cm long.
Malik's arm is 59 cm long.
Priya's arm is 65 cm long.
Order the lengths of their arms from shortest to longest.
59 cm, 62 cm, 65 cm