- Question 1: 14 - 10 blank.
- Question 2: 16 - 11 blank.
- Question 3: 14 - 5 blank.
- Question 4: 14 - 4 blank.
- Question 5: 11 - 8 blank.
- Question 6: 9 - 7 blank.
- Question 7: 7 - 1 blank.
- Question 8: 17 - 10 blank.
- Question 9: 21 - 13 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: 14 - 10, 16 - 11, 14 - 5, 14 - 4, 11 - 8, 9 - 7, 7 - 1, 17 - 10, 21 - 13.
The picture is the check: it only completes when all nine answers are right. That is what makes the sheet work without an adult standing over it. 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 Around the House scene.
