0 + 3 = 3
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2 + 1 = 3
3 + 0 = 3
  • Find the first number in each addition number sentence. Look for a pattern. Each number is one more than the number above it. To complete the pattern, the missing addition number sentence must start with 1.
  • Now find the second number in each addition number sentence. Look for a pattern. Each number is one less than the number above it. To complete the pattern, the missing number must be 2. The second number in the missing addition number sentence is 2.
  • The missing addition number sentence starts with 1 + 2. This is a way to make 3. The missing addition number sentence is 1 + 2 = 3.
0 + 4 = 4
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2 + 2 = 4
3 + 1 = 4
4 + 0 = 4
  • Find the first number in each addition number sentence. Look for a pattern. Each number is one more than the number above it. To complete the pattern, the missing addition number sentence must start with 1.
  • Now find the second number in each addition number sentence. Look for a pattern. Each number is one less than the number above it. To complete the pattern, the missing number must be 3. The second number in the missing addition number sentence is 3.
  • The missing addition number sentence starts with 1 + 3. This is a way to make 4. The missing addition number sentence is 1 + 3 = 4.
________________
1 + 2 = 3
2 + 1 = 3
3 + 0 = 3
  • Find the first number in each addition number sentence. Look for a pattern. Each number is one more than the number above it. To complete the pattern, the missing addition number sentence must start with 0.
  • Now find the second number in each addition number sentence. Look for a pattern. Each number is one less than the number above it. To complete the pattern, the missing number must be 3. The second number in the missing addition number sentence is 3.
  • The missing addition number sentence starts with 0 + 3. This is a way to make 3. The missing addition number sentence is 0 + 3 = 3.