Number lines with negatives
- Age
- Ages 9–10
Calculate 24 × 13 as 24 × 10 + 24 × 3 = 240 + 72 = 312. Then check an equivalence such as 1/2 = 2/4 using equal-sized diagrams.
Calculate 24 × 13 as 24 × 10 + 24 × 3 = 240 + 72 = 312. Then check an equivalence such as 1/2 = 2/4 using equal-sized diagrams.
Review written calculations, word-problem interpretation and equivalence separately; confidence in one does not guarantee the others. 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.