UNIT 08 // SESSION B // MASTER WHEN READY
Half of a two digit odd number
Name:Date:
Same method. Split, halve each piece, put back together. This time the ones part gives you a half.
1Worked example: half of 47
47 splits into 40 and 7. Half of 40 is 20. Half of 7 is 3 and a half. Answer: 23 and a half
2Fill in every step.
65 → + → + → half of 65 =
89 → + → + → half of 89 =
25 → + → + → half of 25 =
69 → + → + → half of 69 =
43 → + → + → half of 43 =
81 → + → + → half of 81 =
3Mixed. Some are even, some are odd. Watch out.
half of 27 =
half of 48 =
half of 63 =
half of 86 =
half of 41 =
half of 24 =
4Word problems.
aThere are 25 grapes on the plate. Ava and Nora share them equally. How many each?
bHalf of the 47 stickers in the pack are gold. How many are gold?
Do not go further than thisEvery tens digit on this sheet is even. Numbers like 70 or 96 need a harder step, where a spare ten becomes five ones. That is not in the plan this term, and introducing it now will muddy the clean method she has just learned.
2. 60+5 → 30+2½ = 32½; 80+9 → 40+4½ = 44½; 20+5 → 10+2½ = 12½; 60+9 → 30+4½ = 34½; 40+3 → 20+1½ = 21½; 80+1 → 40+½ = 40½ 3. 13½, 24, 31½, 43, 20½, 12 4. a 12½, b 23½