Step 1 of 4 · Two strategies
Add by place value · OR look for friendly pairs that make 100.
Compatible pairs add to 100:
25 + 75 = 100 · 30 + 70 = 100 · 40 + 60 = 100 · ...
Spot a pair → use it first to make the sum easy.
No friendly pair? Just add hundreds + tens + ones separately.
Step 2 of 4 · 125 + 875 · friendly pair!
125 + 875 = ?
125 = 100 + 25
875 = 800 + 75
25 + 75 = 100
100 + 800 + 100 = 1,000
125 + 875 = 1,000
Step 3 of 4 · 111 + 222 · place value
111 + 222 = ?
Hundreds
Tens
Ones
3 H + 3 T + 3 O = 333
111 + 222 = 333
Step 4 of 4 · Your turn
Look for a friendly pair · or add by place.
🏆

Nice work!

You used the strategy.

Student App
PrepBox
Parent App
MathPulse