L 41

Presentation

•

Mathematics

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2nd Grade

•

Easy

•

CCSS

4.NBT.A.1, 2.NBT.A.3

Standards-aligned

Renting Wu

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5 Slides • 5 Questions

L 41

What is place value? 位值

Place value is the value of each digit in a number.
For example, the 5 in 350 represents 5 tens, or 50; however, the 5 in 5,006 represents 5 thousands, or 5,000.

Place value chart

Multiple Choice

what is the place value of the digit 3 in the number 345 ?

300

tens

hundreds

Multiple Choice

what is the place value of the digit 2 in the number 312 ?

ones

tens

hundreds

Multiple Choice

what is the place value of the digit 4 in the number 540 ?

tens

ones

What is Expanded Form 展开式？

In the expanded form. we break up a number according to their place value and expand it to show the value of each .
345 = 300+40+5
56= 50+6

Multiple Choice

which one is the expand form of 357 ?

357= 3+5+7

357= 30+50+7

357= 300+57

357= 300+50+7

Multiple Choice

which one is the expand form of 785 ?

785 = 700+80+5

785 = 700+85

785= 700+50+8

785= 700+8+5

L 41

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