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02Find the Red Ball Unit
Objective: Learn how to coOmbjpeacrteiv, eo:rdLeera, ranndnummakbeer4s-dfirgoitmnu0mtboe9rs. Write the first set of three numbers on the
board to compare them with the students.
3 different numbers are written on a piece of paper. Only a part of each Compare 19 , 2 7, and 1 0.
3-digit number is shown. Write the numbers from greatest to least. Which place values should we compare
first? The numbers in the hundreds.
19 27 10 What is the greatest number? 2 7
because it has a two in the hundreds place.
2 7, 19 , 1 0
Which number is bigger; 1 0. or 19 ?
19 10 99 19 .
What happens to the number if a nine
99, 1 9, 10 goes in the blank for 1 0?
You will have the same numbers in the
hundreds and in the tens. 1 0 will always be
smaller than 19 because there is a zero in
the ones place (having said that the three
numbers must be different).
What is the smallest number out of 19 ,
2 7, and 1 0? 1 0 .
Write 19 , 2 7, 1 0 in order from
greatest to least values using greater than
and less than signs.
2 7 19 1 0 .
2. Find the Red Ball 13
Comparing 3-Digit Numbers Comparing Three Numbers
When comparing 3-digit numbers, have them Compare the number of place values in all three
compare the numbers in the hundreds, tens, and numbers.
then ones place in order. If the number of place values in all three numbers
are equal, compare the numbers in each place
value.
Compare the numbers in each place value from
greatest to smallest.
3A Unit 02 021
02Find the Red Ball Unit
Objective: Learn how to coOmbjpeacrteiv, eo:rdLeera, ranndnummakbeer4s-dfirgoitmnu0mtboe9rs. Write the first set of three numbers on the
board to compare them with the students.
3 different numbers are written on a piece of paper. Only a part of each Compare 19 , 2 7, and 1 0.
3-digit number is shown. Write the numbers from greatest to least. Which place values should we compare
first? The numbers in the hundreds.
19 27 10 What is the greatest number? 2 7
because it has a two in the hundreds place.
2 7, 19 , 1 0
Which number is bigger; 1 0. or 19 ?
19 10 99 19 .
What happens to the number if a nine
99, 1 9, 10 goes in the blank for 1 0?
You will have the same numbers in the
hundreds and in the tens. 1 0 will always be
smaller than 19 because there is a zero in
the ones place (having said that the three
numbers must be different).
What is the smallest number out of 19 ,
2 7, and 1 0? 1 0 .
Write 19 , 2 7, 1 0 in order from
greatest to least values using greater than
and less than signs.
2 7 19 1 0 .
2. Find the Red Ball 13
Comparing 3-Digit Numbers Comparing Three Numbers
When comparing 3-digit numbers, have them Compare the number of place values in all three
compare the numbers in the hundreds, tens, and numbers.
then ones place in order. If the number of place values in all three numbers
are equal, compare the numbers in each place
value.
Compare the numbers in each place value from
greatest to smallest.
3A Unit 02 021
