84 5-1 Numbers to 20
Numbers to 20Lesson 1 1
How many straws are there?
eleven
sixteen
17 is 10 and 7. 2 tens make 20.
twelve
seventeen
thirteen
eighteen
fourteen
nineteen
fifteen
twenty
710
17
1010
20
11
16
12
17
13
18
14
19
15
20
10101010
1010101010
10 10
Think
Learn
855-1 Numbers to 20
Show the numbers from 11 to 20 with ten-frame cards,number cards, and number word cards.
How many cherries are there?
How many lollipops are there?
How many party hats are there?
10 + 5 =
is 10 and 7.
10 + 3 =
= 10 + 7
10 and 5 make .
10 and 3 make .
11 12 20
eleven twentytwelve
Do
Exercise 1 • page 83
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2
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4
Textbook 1A_Insides.indd 84 17/10/17 3:48 PM
84 5-1 Numbers to 20
Numbers to 20Lesson 1 1
How many straws are there?
eleven
sixteen
17 is 10 and 7. 2 tens make 20.
twelve
seventeen
thirteen
eighteen
fourteen
nineteen
fifteen
twenty
710
17
1010
20
11
16
12
17
13
18
14
19
15
20
10101010
1010101010
10 10
Think
Learn
855-1 Numbers to 20
Show the numbers from 11 to 20 with ten-frame cards,number cards, and number word cards.
How many cherries are there?
How many lollipops are there?
How many party hats are there?
10 + 5 =
is 10 and 7.
10 + 3 =
= 10 + 7
10 and 5 make .
10 and 3 make .
11 12 20
eleven twentytwelve
Do
Exercise 1 • page 83
1
2
3
4
Textbook 1A_Insides.indd 85 17/10/17 3:48 PM
102 6-1 Add by Making 10 — Part 1
Add by Making 10 — Part 1Lesson 1 1
There are 9 yellow peppers and 4 orange peppers.How many peppers are there altogether?
Make a 10!
There are peppers altogether.
9 and 1 make 10.10 and 3 make ?
31
9 + 4
9 + 4 =
Think
Learn
1036-1 Add by Making 10 — Part 1
8 + 3 =
10 + 1 = ?8 and 2 make 10.
12
8 + 3
There are 8 green scissors and 5 pink scissors. How many scissors are there in all?
8 + 5 =
There are scissors altogether.
Add 3 to 8.
Do
1
2
Textbook 1A_Insides.indd 102 17/10/17 3:48 PM
102 6-1 Add by Making 10 — Part 1
Add by Making 10 — Part 1Lesson 1 1
There are 9 yellow peppers and 4 orange peppers.How many peppers are there altogether?
Make a 10!
There are peppers altogether.
9 and 1 make 10.10 and 3 make ?
31
9 + 4
9 + 4 =
Think
Learn
1036-1 Add by Making 10 — Part 1
8 + 3 =
10 + 1 = ?8 and 2 make 10.
12
8 + 3
There are 8 green scissors and 5 pink scissors. How many scissors are there in all?
8 + 5 =
There are scissors altogether.
Add 3 to 8.
Do
1
2
Textbook 1A_Insides.indd 103 17/10/17 3:48 PM
120
14 − 9 = + 4 11 − 8 = + 1
16 − 9 = + 6
17 − 8 = + 7
Subtract 9 from 15.
=
Should + or – go in the ?
10 − 9 = 10 − 8 =
10 − 9 =
10 − 8 =
11 − 9 =
13 − 8 =
17 − 9 =
12 − 8 =
15 − 9 =
16 − 8 =
14 − 9 = 11 − 8 =
16 − 9 =
17 − 8 =
(a)
(a)
(b)
(c)
(c)
(e)
(d)
(b)
( d )
(f )
7-1 Subtract from 10 — Part 1
Exercise 1 • page 117
3
4
5
1217-2 Subtract from 10 — Part 2
Subtract from 10 — Part 2Lesson 2 2
Sofia caught 12 trout. She puts 7 trout back.How many trout are left?
12 − 7 =
trout are left.
Think
Learn
210
12 − 7
10 − 7 = 33 and 2 make ?
Textbook 1A_Insides.indd 121 17/10/17 3:48 PM
122 7-2 Subtract from 10 — Part 2
Sofia has 15 stickers. She uses 6 stickers.How many stickers are left?
15 − 6 =
There are stickers left.
Subtract 6 from 12.
12 − 6 =
Do
2
5
10
10
12 − 6
15 − 6
1
2
7-2 Subtract from 10 — Part 2
110
11 − 5
Subtract 5 from 11.
=
11 − 6 = 16 − 7 =
13 − 5 =
14 − 5 = 12 − 3 =
11 − 7 =
14 − 7 = + 4 12 − 5 = + 2
13 − 6 = + 3
11 − 4 = + 1
10 − 7 = 10 − 5 =
10 − 6 =
10 − 4 =
14 − 7 = 12 − 5 =
13 − 6 =
11 − 4 =
(a)
(a)
(b)
(b)
(c)
(c)
(d)
(d)
(e) ( f )
Exercise 2 • page 121
123
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4
5
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122 7-2 Subtract from 10 — Part 2
Sofia has 15 stickers. She uses 6 stickers.How many stickers are left?
15 − 6 =
There are stickers left.
Subtract 6 from 12.
12 − 6 =
Do
2
5
10
10
12 − 6
15 − 6
1
2
7-2 Subtract from 10 — Part 2
110
11 − 5
Subtract 5 from 11.
=
11 − 6 = 16 − 7 =
13 − 5 =
14 − 5 = 12 − 3 =
11 − 7 =
14 − 7 = + 4 12 − 5 = + 2
13 − 6 = + 3
11 − 4 = + 1
10 − 7 = 10 − 5 =
10 − 6 =
10 − 4 =
14 − 7 = 12 − 5 =
13 − 6 =
11 − 4 =
(a)
(a)
(b)
(b)
(c)
(c)
(d)
(d)
(e) ( f )
Exercise 2 • page 121
123
3
4
5
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1257. subtitle124 7-3 Subtract the Ones First
Subtract the Ones FirstLesson 3 3
Sofia has 12 raspberries.She eats 5 of them.How many raspberries are left?
Which ones will I eat first?
Think
1257. subtitle 1257-3 Subtract the Ones First
12 − 5 =
12 − 5 =
There are raspberries left.
12 − 2 = 1010 − 3 = ?
LearnLearn
210
12 − 5
32
12 − 5
Method 1
Method 2
Textbook 1A_Insides.indd 125 17/10/17 3:48 PM
166 Review 2
What comes next?
4 + 8 = 10 +
13 − 8 = − 5
11 − 2 = 4 + 12 − 8 = 13 −
14 − 5 = 10 −
14 − 6 = 8 + 9 =
7 + = 11
16 − 7 = 3 +
( h )( g )
(f )(e)
(c)
(b)(a)
15 − = 7(d)
(c)
(b)
(a) 15
nineteen
15 − 6
6
twenty
11
twelve
16 − 6
18
eight
14
two
9 + 6 15 + 2 19 − 6
Put in order from least to greatest.
( i ) ( j )
4
5
6
167Review 2
Salim wants to read 15 books.He has read 9 books so far.How many more books does he still need to read?
Mari has 7 books. She buys 5 more books.How many books does she have now?
Write an equation for each and find the answer.
Lisa read from the beginning of the 3rd pageto the end of the 12th page in a book.How many pages did she read?
Tyler found 15 seashells.3 of them are broken.How many seashells are not broken?
Holly gave away 3 seashells.She now has 6 seashells.How many seashells did she have at first?
There are 14 dogs in an animal shelter.7 of the dogs are adopted.How many dogs are waiting to be adopted?
4 cats were adopted in the morning.8 cats were adopted in the afternoon.How many cats were adopted that day?
( f )
(e)
(d)
(c)
(b)
(a)
7
8
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