Convert between written forms of numbers

Convert between numbers, word form, and expanded form for multi-digit numbers. Compare them too.

Watch these Khan Academy videos:

Comparing multi-digit whole numbers word problems
Writing a number in standard form
Finding place value
Writing a number in expanded form
Comparing whole number place values

Do these Khan Academy exercises:

Compare multi-digit numbers word problems
Write numbers in written form
Identify value of a digit
Compare multi-digit numbers
Write whole numbers in expanded form
Place value tables
Compare numbers: place value challenge
Write whole numbers in different forms

Next, give your students these challenges:

2020 Math Kangaroo Levels 1-2 Problem #21 by STEM4all
Halving by NRICH

Conclude by leading this investigation:

Taipei 101 Foundations (multiplication, proof)
by MathPickle

4.NBT.A.2: Read and write multi-digit whole numbers using base-ten numerals, number names, and expanded form. Compare two multi-digit numbers based on meanings of the digits in each place, using >, =, and < symbols to record the results of comparisons.

Lessons and practice problems