Work through the levels in order. Type your answer and press Check — open the worked solution if you get stuck. Answers like -6, 3/4 or 0.25 are typed exactly as shown. A ⭐ Bonus Challenge at the end is extra credit — skip it if the rest was hard work.
Level 1 · Warm-up
1 Which one of these equals 307?
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300 + 7.
2 In the number 564, write what the 5 is worth and what the 6 is worth.
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The 5 is worth 500 and the 6 is worth 60.
3 What number is halfway between 40 and 60?
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50.
Level 2 · Core
4 Which of these numbers is the largest?
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All start with 4 thousands; then 8 hundreds beats 7 and 0, so 4807.
5 A number line is labelled every 50 with a tick every 10. Write the value of one step, and the number 3 steps after 200.
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One step is 10, so 3 steps after 200 is 230.
6 In the number 4807, what is the 4 worth?
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4000.
Level 3 · Challenge
7 Think about finding the number halfway between 285 and 325.1 285 + 325 = 610.
2 Halfway is 305.
3 Halfway is 300.
Which statements are correct?
2 Halfway is 305.
3 Halfway is 300.
Which statements are correct?
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285 + 325 = 610 (1 ✓) and 610 ÷ 2 = 305 (2 ✓, 3 ✗). Check: 305 − 285 = 20 = 325 − 305. 1 and 2.
8 Write the number that is halfway between 120 and 180, and the gap between that number and 120.
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Halfway is 150, and 150 − 120 = 30 — the same as 180 − 150.
9 What number is exactly halfway between 285 and 325?
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305.