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### Course: MAP Recommended Practice>Unit 14

Lesson 25: Multiply by tens word problems

# Multiplying by tens word problem

Lindsay multiplies 90 times 5 to solve a word problem. Created by Lindsay Spears.

## Want to join the conversation?

• so would this question be right? 50x4=200?
• Yes, you're right.
Here are my steps, broken down:
50 ×4
5×10 ×4
Here you can switch the order of the numbers due to the commutative property:
5×4×10
We know 5×4=20, so 5×4 ×10 = 200.
• isnt 90 times 5 the same as adding 90 5 times?
• Multiplication is just that.
• hi I am a human
(1 vote)
• UM everyone knows that you're a human unless you're an NPC (bot) which is not needed
• did you know about ! in math
(1 vote)
• bro this is teaching me a lot of things
(1 vote)
• he's just trying to be nice
(1 vote)
• why is math so hard?
(1 vote)
• math is hard because math is supposed to be hard.
(1 vote)
• would this questchin right?

{109+99=?