Post on 11-Feb-2021
Answers
Lesson 1 1. 5
3.
2. 3
6, eight
eight five three seven
9. 5
11. 0
13. 1
15. four
17. tv\/o
19. 0 ,1 ,2 ,3 ,4 ,5
21. 5, 6, 7, 8, 9, 10
23.
10. 3
12. 8
14. two
16. one
18. six/6
20. 10, 9, 8, 7, 6
22. 6 , 5 , 4 , 3 , 2
one four six
three six five
r_f ive^ seven nine six
G? one Q h r e e j two ten
Lesson 2
1. igloos, people
2. fewer
3. more
4.
5.
6.
g lasses \L /6 candle* plates 8
12.
17.
19.
16.
18.
20.
Extra Practice 1A 165
23.
24.
25.
26.
27.
H. bird, nest 5.
6. C 7.
8. D 9.
10. 8 , 7 , 6 , 5 , 1 , 3 11.
12. 5, 6, 7, 8, 9, 10 13.
11. 8 15.
16. 9 17.
18. 5 19.
20. 1
leaf, caterpillar
A
6, 5 ,1 , 3, 2,1
0, 1, 2, 3, 1
8,1, 6, 5, 1 7
6
9
Put on Your Thinking Cap! 1-2. Thinking Skill: Spatial Visualization
Solution:
Thinking Skill: Problem Solving
Strategy: Make a systematic list
Solution:
_ + _ = 5
1 + 1 = 5
3 + 2 = 5
Look at the parts of the whole.
Which port is 1 more than the other?
Jake has 3 bones and Ginger has 2 bones.
( wp:m'f2)
Lesson 1 (Part 1)
1. 3, 5
3. 0
2. 2
1. 1
166 Answers
11. 3 ,2 4, 1 0, 5 Accept all answers.
12. 1,6 2 ,5 3,4 0, 7 Accept any two answers.
13. 1,5 2,4 3, 3 0, 6 Accept any three answers.
Lesson 1 (Part 2)
8. 7 9. 2
Lesson 1 (Part 3)
1 5 2. 3 , 1 or 1, 3
3. 7 4. 1,2 or 2,1
5. 3 1 1 1 , 1 11 I 11 1
Put on Your Thinking Cap! Thinking Skill; Analyzing Parts and Whole
Solution: 1.
Extra Practice lA
168 Answers
3. 3
3 + 4 = 7 7
H. 2 3 2 + 3 = 5 5
Put on Your Thinking Cap! I. Thinking Skill: Logical Reasoning
Solution; Red Green Yellow Blue
2. Thinking Skill: Guess and Check
Solution;
Lesson 1 (Part 1) 1.
2.
Lesson 1 (Part 2)
1.
4. 3 5. 5 6. 1 7. 3
8. 2 9. 5 10. 7 11. 4
12. 8 13. 5 14. 5 15. 1
16. 2 17. 2 18. 5 19. 6
20. 2 21. 7 22. 4 23. 4
24. 6 25. 1 26. 2
2.
3. 4
5. 8 - 1 = - !
6. w-5 = A
7. 6 - o = A
9 - 6 =
9. 1 0 - 6 = - l
10. t - t = -0
11. 8 12. 5 13. 4 14. 3
15. 9 - 6 = 3,3 16. 5 - 3 = 2,2 ( 3 .
Lesson 2 1. 2 , 7 - 2 = 5,5
Lesson 3
1. 9 - 3 = 6,6
3. 6 - 1 = 5, 5
5. 5 - 3 = 2, 2
7. 7 - 2 = 5, 5
Lesson H 1. 6 + 2 = 8
2 + 6 = 8 8 - 2 = 6 8 - 6 = 2
3. 7
2. 7 - 3 = 4, 4
4. 8 - 3 = 5,5
6. 9 - 2 = 7, 7
2. 3 + 1 = 4 1 + 3 = 4 4 - 3 = 1 4 - 1 = 3
4. 4
Extra Practice lA 169
Put on Your Thinking Cap! Thinl
5. triangle
6. circle
7. square or rectangle
Lesson 2 1-6.
cylinder
sphere
cube
pyramid
rectangular prism 6 | \ ^
cone
7.
O 8. stack
9. slide
10. roll
Lesson 3 (Part 1)
1. 10
3. 5
5. triangles: green
7. rectangles: blue
2. 6
H. 2
6. 5
8. 6
Lesson 3 (Part 2)
2. Answers vary
Extra Practice 1A
Lesson H
1. square
3. rectangle
5. square
7.
2. triangle
H. circle
6. circle
10.
Lesson 5 1. 2.
5. Answers vary
Lesson 6 1.
o 4-. Answers vary
6. Answers vary
3. 4.
Put on Your Thinking Cap! Thinl
5. 10
7. seal
9. 7th
11. cat
13. elephant
15. tiger
17. third
19. triangle
21. last
Lesson 2 (Part 2)
1. next to
3. down
5. behind
6. horse
8. 3rd
10. horse
12. horse
IH. camel
16. monkey
18. first
20. square
2. below
^. above
6. in front of
Put on Your Thinking Cap! Thinking Skill: Comparing
Solution: 2 flowers, H flowers, 3 flowers, flower
Lesson 1 1. IH 2. 17 3. 15 1. 13
5. 12 6. 17
7-10.
thirteen
18. 15
19. IH
20. 3
21. 0 r.
^ ^ ^ ^ ^
Lesson 2 1. 1 ten 3 ones
2. 1 ten 6 ones
3. 1 ten 2 ones
Tens Ones
18 1 8
5. Tens Ones
12 1 2
6. Tens Ones
20 2 0
7.
17
8. 10
Lesson 3
1. B, A
5. 13
9. 19
Lesson 4
Tens Ones
1 7
9. 28
2. Set I
6. 18
10. 17
10. 15 11. 19
SetB H. 14
17 8. 16
1.
5.
9.
IH
9
D
2. 18
6. 13
10. 12
15 13. 19
16. 12, 13,15, 17, 19
18. 8,11,13,19
20. 10, 16, 18
22. 18,24
2H. 9
3.
7.
11.
15.
17.
19.
21.
23. 14
25. 16
14
D
19
13
20, 17,15, 11
15, 16, 18
13,9
4. 20
8. B
12. 12
Extra Practice lA 173
Put on Your Thinking Cap!
1. Thinl
12. ff^f.
^ , 0 - 6 = , , , . 2 = 6,6
10 - 6 = 4, 4 + H = 8, 8
6 17
15. m
10 - 8 = 2, 2 + 7 = 9, 9
16. 12
17. 6 @
19. 8 @
21, 3 @
23. 6 ®
® © Lesson 3 1. 1 0 - 2 = 8, i
(10
18. 3 @
® ®
20. 5 @
22. 6 @
24, 8 @
® 0
2. 7 + 6 = 13, 13
3. 1 6 - 4 = 12,12 4. 8 + 12 = 20,20
5. 8 + 4 = 12, 12
Put on Your Thinking Cop! 1. Strategy: Worl< Backwards
Solution: 1 3 - 6 = 7 7 - 4 = 3
Jenny hod 3 marbles.
3 + 5 = 8
May had 8 marbles.
8 + 10 = 18 Albert had 18 marbles.
2. Thinking Skill: Induction and Deduction
Solution: Ben has 8 seashells. 8 + 10 = 18 Caleb has 18 seashells. 1 8 - 6 = 12 Derek has 12 seashells.
Lesson 1
((( [\t>
2.
F l m 1 0
5. Answers vary 6. Answer vary
Lesson 2 1.
A
Extra Practice 1A
2.
3.
10.
H. Pencil A is shorter, than Pencil B. /
5. Pencil D is the shortest.
6. Pencil B is the longest.
7. Bill
9. Joe
11. shortest
13. taller
15. Colin
17. Alice, Colin
18. A
tallest shortest
Lesson 4
1. 6 2. 5
5. Icnife, spoon
7. 5 8. 12
Lesson 5
1. 4
5. 1
9. 6
2. D
6. 2
/ 8. Dan
10. tallest
12. shorter
14. taller, shorter
16. Alice
Lesson 3
1. tack 2. pencil
3. pencil 4. tack
5. foot, leaf, wornn, pen
6. broom, rope, mop, stick
3. 2 4. tongs
6. spoon
9. 3
3. A, B
7. 3
4. 16
8. 9
12. C 13. 13 14. 10 15. 6
16. C 17. B, 2 18. A , D 19. C
20. Plant E 21. 5 22. 9 23. 10
24. A 25. C 26. A , C
Put on Your Thinking Cap! 1. Thinking Skill; Comparing
Solution; Ron; Tower B Sally; Tower A Trent: Tower D Mandy; Tower C
2. Thinking Skill; Spatial Visualization
Solution; 5 + 5 + 5 = 15 15 units
1. C 2. B 3. B 4. A
5. D 6. B 7. C 8. D
9. C 10. D 11. B 12. A
13. A 14. B 15. C 16. C
17. B 18. C 19. B 20. A
21. 25, 12, i 3,6 22. 11 + 2
23. 8 24. 10 25. + 26. Kc
27. Sue 28. Tom 29. size
30.
31.
32.
33. 3 + 6 = 9 / 6 + 3 = 9
34. 9 - 3 = 6 / 9 - 6 = 3
35. 9
36. 8 + 6 = 14, 14
37. 15 - 5 = 10, 10
38. 12 + 4 = 16, 16
39. 2 0 - 8 = 12, 12
40. a. D b.B
176 Answers