Multiply by 2, 5 and 10
Multiply numbers by 2, 5 and 10
Multiply by 2, 5 and 10 ✖️
Multiplying by 2 means doubling. Multiplying by 5 means counting in fives. Multiplying by 10 means adding a zero at the end!
Example
Times Tables
× 2: 1×2=2, 2×2=4, 3×2=6, 4×2=8, 5×2=10 🎉
× 5: 1×5=5, 2×5=10, 3×5=15, 4×5=20, 5×5=25 🎉
× 10: 1×10=10, 2×10=20, 3×10=30, 4×10=40, 5×10=50 🎉
Example
Word Problem
There are 4 bicycles 🚲. Each has 2 wheels.
How many wheels? 4 × 2 = 8 wheels!
There are 3 hands ✋. Each has 5 fingers.
How many fingers? 3 × 5 = 15 fingers!
Note
Remember 💡
× 2: the answer is always even. × 5: the answer always ends in 0 or 5. × 10: just put a 0 at the end of the number!
Key Vocabulary
MultiplyA quick way to add equal groups
DoubleMultiply by 2, make twice as many
Times tableA list of multiplication facts
ProductThe answer when we multiply two numbers
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