- Question 1: 9 - 1 blank.
- Question 2: 3 - 1 blank.
- Question 3: 8 - 4 blank.
- Question 4: 21 - 11 blank.
- Question 5: 17 - 11 blank.
- Question 6: 11 - 6 blank.
- Question 7: 13 - 10 blank.
- Question 8: 11 - 4 blank.
- Question 9: 15 - 6 blank.
For practice after crossing 10 has been taught: the nine subtraction problems reach 21, and 3 of 9 problems cross 10. The focus is the crossing, not calculating inside a single ten. Filed under Grade 1, though the numbers here go above 20 — closer to Grade 2 or Year 3. In Grade 1 it suits children already secure within 20.
The nine problems on this sheet: 9 - 1, 3 - 1, 8 - 4, 21 - 11, 17 - 11, 11 - 6, 13 - 10, 11 - 4, 15 - 6.
A wrong answer breaks the picture, so a child sees the mistake straight away and can fix it without waiting for an adult. It shows where they went wrong, not why. Because each answer from 2 to 10 appears exactly once, a child who has placed six pieces can deduce the rest. Having them write the answers first keeps it arithmetic.
Nine problems is about five to ten minutes for a secure child, which fits early finishers and morning work. It practises something already taught rather than introducing anything new.
The answer key lists all nine results, which is the quickest way to check the level before printing. Note that crossing 10 only comes up in the subtraction here; adding over ten does not appear on this type of sheet. The completed picture shows a accessories scene.
