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3
Multiplication
LEARNING ObjEctIvEs
After studying this chapter, students will be able to...
y multiply 4-digit numbers by 1-digit numbers
y multiply 3- and 4-digit numbers by 2-digit numbers
y understand the properties of multiplication
y multiply the numbers by using the lattice multiplication method
y multiply two 3-digit numbers together
y estimate the product
y solve real-life problems based on multiplication
21 st
Century #Inter-disciplinary
Skills
Warm Up Earth's Moon
On most nights, you can see the moon in the
sky. The moon is the only natural satellite of
Earth. It is the only place in our solar system
other than Earth that humans have visited.
Here are some interesting facts about the moon.
• The moon goes around Earth once in
about 28 days.
• On Earth, an object weighs 6 times its weight on the moon.
• The moon is slowly moving away from Earth by about 4 cm every year.
• You can jump 6 times higher on the moon than on Earth.
43
Multiplication
