Vertical 3-digit addition, no regrouping
- Age
- Ages 7–8
Represent 34 as three tens and four ones. Add 12 to make 46 and explain what changes in each position.
Represent 34 as three tens and four ones. Add 12 to make 46 and explain what changes in each position. Introduce equal groups with pictures before memorizing multiplication facts.
Alternate place value, calculation, measurement and telling time without assuming they were learned together. Content and teaching order differ across school systems; these examples are practice choices, not an official curriculum equivalence.
Work through one example aloud before independent practice. To check 18 + 7 = 25, calculate 25 − 7. If a word problem asks about meters or coins, include that unit and check whether the answer fits the situation.