This Grade 2 worksheet teaches break-apart and number line jump strategies for adding within 1000. Students split addends by place value, like 245+137 as 245+100+30+7, and follow jumps on a number line to land on the sum. Fill-in questions and matching tasks help Grade 2 learners visualize addition flexibly, strengthening place value fluency and the mental math skills needed to master three-digit addition in many real contexts.
Style:
Add & Subtract Within 1000
Part A: Fill in the Blank
Write the missing word or number on each line.
1. 245 + 137 = 245 + 100 + 30 + 7
2. 318 + 204 = 318 + 200 + 4
3. Start at 460. Jump +100, +20, +5. You land on 585.
4. 562 + 125 = 562 + 100 + 20 + 5
5. Start at 283. Jump +200, +40, +3. You land on 526.
6. 417 + 265 = 417 + 200 + 60 + 5
7. 350 + 148 = 350 + 100 + 40 + 8
8. Start at 178. Jump +300, +10, +2. You land on 490.
9. 529 + 163 = 529 + 100 + 60 + 3
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
236 + 142
→ break into 100+40+2
break into 100+40+2
305 + 218
→ break into 200+10+8
break into 200+10+8
471 + 124
→ break into 100+20+4
break into 100+20+4
158 + 230
→ break into 200+30+0
break into 200+30+0
Add & Subtract Within 1000
★ Part A: Fill in the Blank
Write the missing word or number on each line.
1) 245 + 137 = 245 + 100 + 30 + 7
2) 318 + 204 = 318 + 200 + 4
3) Start at 460. Jump +100, +20, +5. You land on 585.
4) 562 + 125 = 562 + 100 + 20 + 5
5) Start at 283. Jump +200, +40, +3. You land on 526.
6) 417 + 265 = 417 + 200 + 60 + 5
7) 350 + 148 = 350 + 100 + 40 + 8
8) Start at 178. Jump +300, +10, +2. You land on 490.
9) 529 + 163 = 529 + 100 + 60 + 3
★ Part B: Matching
Match each item on the left to the correct answer on the right.
1) Match each item to its correct answer.
236 + 142
→ break into 100+40+2
break into 100+40+2
305 + 218
→ break into 200+10+8
break into 200+10+8
471 + 124
→ break into 100+20+4
break into 100+20+4
158 + 230
→ break into 200+30+0
break into 200+30+0
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10 Questions
10-15 minutes
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