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 What is 56 − 29?
Show worked solution
1 + 20 + 6 = 27. Check: 27 + 29 = 56.
2 Add 68 + 109 in two steps. Write the answer to each step.
Show worked solution
68 + 100 = 168, then 168 + 9 = 177.
3 What is 43 − 27?
Show worked solution
16.
Level 2 · Core
4 Ravi worked out 91 − 45 = 46. Which calculation checks his answer?
Show worked solution
46 + 45, which gives 91. ✓
5 Dan buys a pie for $2.80 and a juice for $2.05, and pays with a $10 note. Write the total he spent and the change he gets, both in dollars (for example 3.40).
Show worked solution
He spent 4.85 and his change is 5.15. Check: 4.85 + 5.15 = 10.
6 A number plus 38 makes 92. What is the number?
Show worked solution
92 − 38 = 54. Check: 54 + 38 = 92.
Level 3 · Challenge
7 Ben spends $3.60 and $2.90, and pays with a $10 note.1 Ben spent $6.50 altogether.
2 Ben gets $3.50 change.
3 Ben gets $4.50 change.
Which statements are correct?
2 Ben gets $3.50 change.
3 Ben gets $4.50 change.
Which statements are correct?
Show worked solution
$3.60 + $2.90 = $6.50 (1 ✓) and $10 − $6.50 = $3.50 (2 ✓, 3 ✗). 1 and 2.
8 A shop had 205 apples. It sold 68 in the morning and 49 in the afternoon. Write how many were sold altogether, and how many are left.
Show worked solution
68 + 49 = 117 sold, and 205 − 117 = 88 left. Check: 117 + 88 = 205.
9 Zoe buys two things costing $4.25 and $3.40, and pays with a $10 note. How much change does she get? Write it in dollars, for example 3.40.
Show worked solution
$4.25 + $3.40 = $7.65, and $10 − $7.65 = 2.35.