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Answer Guide — Hollow Harvest Day (A1): Worked Solutions

Teacher answer guide for the summative assessment "Hollow Harvest Day: Numbers & Operations" (A1). Full worked solutions and explanations for all 10 questions across place value, four-digit addition and subtraction, multiplication/division facts, money and change, and number sentences, each illustrated with an animated SVG showing the concept and solution together. Maps answers to the marking criteria. For teacher use.

Biscuit the golden dog.

Teacher answer guide for Hollow Harvest Day (A1). Each question gives the expected answer, the working, what to look for when marking, and an animation that builds the solution. On-screen the diagrams animate; in print they show the finished state.

Part A — Place value

1. Write 14 605 in words.

Answer: fourteen thousand, six hundred and five.

2. Partition 14 605.

Answer: 1 ten-thousand, 4 thousands, 6 hundreds, 0 tens, 5 ones (= 10 000 + 4 000 + 600 + 0 + 5).

ten-thous1 thousands4 hundreds6 tens0 ones5 fourteen thousand, six hundred and five

3. Order 3 400, 14 605, 3 040, 9 870 smallest to largest.

Answer: 3 040, 3 400, 9 870, 14 605.

3 040 3 400 9 870 14 605 smallest → largest: 3 040, 3 400, 9 870, 14 605

Part B — Adding & subtracting

4. 2 350 + 1 875.

Answer: 4 225.

2 000 + 1 000 = 3 000 300 + 800 = 1 100 50 + 75 = 125 3 000 + 1 100 + 125 = 4 225

5. 4 000 − 1 640.

Answer: 2 360 left.

1640 1700 2000 4000 +60 +300 +2000 60 + 300 + 2000 = 2 360 left

Part C — Groups & sharing

6. 7 × 8.

Answer: 56.

= 56 7 rows of 8 (5 shown) — 7 × 8 = 56

7. 36 shared equally among 4.

Answer: 9 each (36 ÷ 4 = 9, because 4 × 9 = 36).

36 shared into 4 groups each group = 9, so 36 ÷ 4 = 9

Part D — The bush stall (money)

8. Change from $5 for a $3.45 cake.

Answer: $1.55.

$3.45 $3.50 $4.00 $5.00 +5c +50c +$1 5c + 50c + $1 = $1.55 change

Part E — Missing numbers

9. 25 + ▢ = 40.

Answer: ▢ = 15.

25 + = 40 think: 40 − 25 ▢ = 15

10. A different number sentence equal to 12 + 8.

Answer: 12 + 8 = 20, so any sentence also equal to 20 — e.g. 15 + 5, 10 + 10, 25 − 5, or 4 × 5.