Workbook Detail
Subtraction Within 20 Expert — Set 92
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"operand1": 19,
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"question": "19 - 6 = ___",
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"id": 7,
"operand1": 13,
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"operator": "-",
"question": "13 - 12 = ___",
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"id": 8,
"operand1": 12,
"operand2": 11,
"operator": "-",
"question": "12 - 11 = ___",
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"id": 11,
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"question": "17 - 6 = ___",
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"id": 12,
"operand1": 16,
"operand2": 15,
"operator": "-",
"question": "16 - 15 = ___",
"answer": 1
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"id": 15,
"operand1": 18,
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"question": "18 - 4 = ___",
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"id": 16,
"operand1": 4,
"operand2": 1,
"operator": "-",
"question": "4 - 1 = ___",
"answer": 3,
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{
"id": 17,
"operand1": 17,
"operand2": 2,
"operator": "-",
"question": "17 - 2 = ___",
"answer": 15
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{
"id": 18,
"operand1": 8,
"operand2": 3,
"operator": "-",
"question": "8 - 3 = ___",
"answer": 5,
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{
"id": 19,
"operand1": 5,
"operand2": 1,
"operator": "-",
"question": "5 - 1 = ___",
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}Teaching Notes
14
-10
6
-2
15
-12
19
-6
8
-3
6
-5
13
-12
12
-11
6
-1
15
-2
17
-6
16
-15
6
-2
6
-3
18
-4
4
-1
17
-2
8
-3
5
-1
9
-1
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