▸ Why It Matters
With sums running up to 18, counting one finger at a time stops being reliable — most children run out of fingers, lose their place, or land one off right when it counts. That's exactly why this worksheet matters: instead of drilling raw counting, it nudges your child toward leaning on facts they already know — doubles like 8+8 or 9+9, and near-doubles like 9+8 — as stepping stones to a new answer. This is the same mental shift that later makes two-digit addition, regrouping, and multiplication tables manageable, so building the habit of reaching for a known fact before a finger is worth the patience now, even if it feels slower at first.
▸ Getting Started
Sit with your child for the first few problems and think out loud together. For 9+8, ask, "Do you know a fact close to this one?" If they say 9+9=18, celebrate that, then ask what changes when one nine becomes an eight — one less, so 17. Try 7+9 the same way: is there a nearby double, like 8+8=16? Since 9 is one more than 8, the answer is one more than 16, so 17. Some children find it easier to start from the bigger number and count on by the smaller one instead — a valid alternative, especially for facts like 9+5 with no obvious nearby double. Let your child pick whichever method feels natural.
▸ If They Get Stuck
If no nearby double comes to mind, or your child freezes, fall back on the "make 10 first" strategy from earlier worksheets: break the smaller number into pieces that complete a ten, then add what's left. For 9+8, take 1 from the 8 to make 9+1=10, then add the remaining 7 to get 17. A common mistake here is forgetting to add that leftover back, so a quick check — "is your answer bigger than both numbers you started with?" — catches most errors. A ten frame or number line on scratch paper can help make the strategy visible.
▸ Praise Points
Praise the strategy, not just the correct answer: "You used 9+9 to help solve 9+8 instead of counting all the way up — that's how math gets faster as numbers grow." If your child tries more than one method on the same problem, point that out too, since flexibility with strategies matters as much as speed. Celebrating effort and clever thinking, even on problems they get wrong, keeps them willing to take the small risks that build real number sense over time.
🎯What This Worksheet Builds
This worksheet raises the challenge to sums between 13 and 18, the hardest range of single-digit addition facts, by pairing larger numbers like 7, 8, and 9 in every combination. Beyond memorization, it builds the mental flexibility to use doubles and near-doubles as shortcuts, which is the same reasoning skill needed later for regrouping in two-digit addition and for multiplication facts, making this a genuine bridge worksheet rather than just more of the same practice.
👉Next Step
Once your child answers these larger sums quickly and confidently, without needing to count on fingers, they're ready for two directions: try simple two-digit addition with regrouping, or introduce basic subtraction so their skills grow in balance rather than addition racing ahead alone. Either path builds naturally on the doubles and make-10 strategies practiced here.