Let's solve the problems step by step.
1. Write the number
-
thirty-two = 32
-
sixty-four = 64
-
twenty-one = 21
-
eighteen = 18
-
fifty-eight = 58
2. Subtraction Facts
-
43 - 28 = 15
-
74 - 22 = 52
-
60 - 18 = 42
3. Use the symbol <, >, or =
####
10 + 30 ☐ 15 + 25
- Calculate both sides:
- \( 10 + 30 = 40 \)
- \( 15 + 25 = 40 \)
- Since both are equal: \( 10 + 30 = 15 + 25 \)
####
15 + 10 ☐ 14 + 12
- Calculate both sides:
- \( 15 + 10 = 25 \)
- \( 14 + 12 = 26 \)
- Since 25 is less than 26: \( 15 + 10 < 14 + 12 \)
####
7 + 22 ☐ 20 + 7
- Calculate both sides:
- \( 7 + 22 = 29 \)
- \( 20 + 7 = 27 \)
- Since 29 is greater than 27: \( 7 + 22 > 20 + 7 \)
4. Add
-
46 + 72 = 118
-
88 + 18 = 106
-
33 + 29 = 62
5. Complete the fact family
The given numbers are
22, 10, 12. We need to create addition and subtraction sentences using these numbers.
-
Addition:
- \( 10 + 12 = 22 \)
- \( 12 + 10 = 22 \)
-
Subtraction:
- \( 22 - 10 = 12 \)
- \( 22 - 12 = 10 \)
Final Answers
1.
Write the number:
- thirty-two =
32
- sixty-four =
64
- twenty-one =
21
- eighteen =
18
- fifty-eight =
58
2.
Subtraction Facts:
- \( 43 - 28 = \mathbf{15} \)
- \( 74 - 22 = \mathbf{52} \)
- \( 60 - 18 = \mathbf{42} \)
3.
Use the symbol <, >, or =:
- \( 10 + 30 \mathbf{=} 15 + 25 \)
- \( 15 + 10 \mathbf{<} 14 + 12 \)
- \( 7 + 22 \mathbf{>} 20 + 7 \)
4.
Add:
- \( 46 + 72 = \mathbf{118} \)
- \( 88 + 18 = \mathbf{106} \)
- \( 33 + 29 = \mathbf{62} \)
5.
Complete the fact family:
- \( 10 + 12 = 22 \)
- \( 12 + 10 = 22 \)
- \( 22 - 10 = 12 \)
- \( 22 - 12 = 10 \)
Boxed Final Answer
\[
\boxed{
\begin{array}{l}
\text{1. } 32, 64, 21, 18, 58 \\
\text{2. } 15, 52, 42 \\
\text{3. } =, <, > \\
\text{4. } 118, 106, 62 \\
\text{5. } 10 + 12 = 22, 12 + 10 = 22, 22 - 10 = 12, 22 - 12 = 10
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of 2 grade work.