Read and Write Numbers 21 – 30

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Count, read
and write whole numbers to 100.
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UNDERLYING SKILLS AND CONCEPTS:
number/picture recognition;
counting;
one-to-one correspondence
Read and Write Numbers 21 – 30
Numbers from 21 to 30 use two digits.
a
K
ey Ide
A – © CSL Associates, Inc. All rights reserved.
E x am p l E
See.
Read.
21
twenty-one
22
twenty-two
23
twenty-three
24
twenty-four
25
twenty-five
26
twenty-six
27
twenty-seven
28
twenty-eight
29
twenty-nine
30
thirty
Chapter 3 – Lesson 3
Count the dots.
page 31
Name
P RAC T I C E
Match the picture to the word.
Write the number next to the word.
twenty-one
21
twenty-five
25
twenty-nine
29
Write the number next to the picture.
2
3
26
Math
Reasoning
4
30
Numbers Through 30
MR 2.1
How many ten-frames does it take to show a number from
21 to 30? Explain.
3; you show 20 using 2 ten-frames and then the
number of ones are shown in a third ten-frame.
page 32
Chapter 3 – Lesson 3
A – © CSL Associates, Inc. All rights reserved.
1
Name
…at home!
P RAC T I C E
Match the picture to the word.
Write the number next to the word.
twenty-two
22
twenty-four
24
twenty-eight
28
Write the number next to the picture.
2
3
27
Math
Reasoning
4
30
Numbers Through 30
MR 2.1
How many ten-frames does it take to show a number from
21 to 30? Explain.
3; you show 20 using 2 ten-frames and then the
number of ones are shown in a third ten-frame.
page 22
Home Resource and Homework
Chapter 3 Lesson 3
A – © CSL Associates, Inc. All rights reserved.
1
MCX94TEG1Ch01_30.v8.4.1 2/19/01 19:18 Page 59
Name
P RAC T I C E
Match the picture to the word.
Write the number next to the word.
A – © CSL Associates, Inc. All rights reserved.
1
twenty-one
21
twenty-five
25
twenty-nine
29
Write the number next to the picture.
2
3
26
Math
Reasoning
4
30
Numbers Through 30
MR 2.1
How many ten-frames does it take to show a number from
21 to 30? Explain.
3; you show 20 using 2 ten-frames and then the
number of ones are shown in a third ten-frame.
Chapter 3 – Lesson 3
Student Book Page
page 32
Name
…at home!
P RAC T I C E
Match the picture to the word.
Write the number next to the word.
twenty-two
22
twenty-four
24
twenty-eight
28
Write the number next to the picture.
2
3
27
Math
Reasoning
4
30
Numbers Through 30
MR 2.1
How many ten-frames does it take to show a number from
21 to 30? Explain.
3; you show 20 using 2 ten-frames and then the
number of ones are shown in a third ten-frame.
page 22
Home Resource and Homework
Chapter 3 Lesson 3
A – © CSL Associates, Inc. All rights reserved.
1