Workbook Detail
Time Half Hour Grade 1 — Set 4
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"operation": "clock-math",
"subject": "clock-math",
"difficulty": "medium",
"config": {
"maxNumber": 20,
"clockMode": "half-hour",
"maxSum": 20,
"maxOperand": 120,
"_gradeLevel": "1"
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"problems": [
{
"id": 1,
"type": "clock-math",
"subType": "read-time",
"question": "What time is shown on the clock? [hour hand near 7, minute hand at 40 minutes]",
"answer": "7:40",
"correctAnswer": "7:40",
"difficulty": "normal",
"visualIntent": {
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"category": "fruits",
"label": "7:40"
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},
{
"id": 2,
"type": "clock-math",
"subType": "elapsed-time",
"question": "How many minutes from 1:30 to 2:30?",
"answer": 60,
"correctAnswer": "60",
"difficulty": "normal",
"visualIntent": {
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"category": "fruits",
"label": "60"
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{
"id": 3,
"type": "clock-math",
"subType": "subtract-time",
"question": "5 minutes before 3:05 = ?",
"answer": "3:00",
"correctAnswer": "3:00",
"difficulty": "normal",
"visualIntent": {
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"category": "fruits",
"label": "3:00"
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{
"id": 4,
"type": "clock-math",
"subType": "read-time",
"question": "What time is shown on the clock? [hour hand near 9, minute hand at 45 minutes]",
"answer": "9:45",
"correctAnswer": "9:45",
"difficulty": "normal",
"visualIntent": {
"layout": "icon-badge",
"category": "fruits",
"label": "9:45"
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},
{
"id": 5,
"type": "clock-math",
"subType": "elapsed-time",
"question": "How many minutes from 1:20 to 1:30?",
"answer": 10,
"correctAnswer": "10",
"difficulty": "normal",
"visualIntent": {
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"category": "fruits",
"label": "10"
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},
{
"id": 6,
"type": "clock-math",
"subType": "add-time",
"question": "90 minutes after 5:10 = ?",
"answer": "6:40",
"correctAnswer": "6:40",
"difficulty": "normal",
"visualIntent": {
"layout": "icon-badge",
"category": "fruits",
"label": "6:40"
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},
{
"id": 7,
"type": "clock-math",
"subType": "elapsed-time",
"question": "How many minutes from 1:40 to 2:30?",
"answer": 50,
"correctAnswer": "50",
"difficulty": "normal",
"visualIntent": {
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"label": "50"
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},
{
"id": 8,
"type": "clock-math",
"subType": "read-time",
"question": "What time is shown on the clock? [hour hand near 3, minute hand at 15 minutes]",
"answer": "3:15",
"correctAnswer": "3:15",
"difficulty": "normal",
"visualIntent": {
"layout": "icon-badge",
"category": "fruits",
"label": "3:15"
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},
{
"id": 9,
"type": "clock-math",
"subType": "read-time",
"question": "What time is shown on the clock? [hour hand near 9, minute hand at 25 minutes]",
"answer": "9:25",
"correctAnswer": "9:25",
"difficulty": "normal",
"visualIntent": {
"layout": "icon-badge",
"category": "fruits",
"label": "9:25"
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},
{
"id": 10,
"type": "clock-math",
"subType": "subtract-time",
"question": "5 minutes before 12:50 = ?",
"answer": "12:45",
"correctAnswer": "12:45",
"difficulty": "normal",
"visualIntent": {
"layout": "icon-badge",
"category": "fruits",
"label": "12:45"
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},
{
"id": 11,
"type": "clock-math",
"subType": "subtract-time",
"question": "40 minutes before 11:45 = ?",
"answer": "11:05",
"correctAnswer": "11:05",
"difficulty": "normal",
"visualIntent": {
"layout": "icon-badge",
"category": "fruits",
"label": "11:05"
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},
{
"id": 12,
"type": "clock-math",
"subType": "add-time",
"question": "55 minutes after 3:05 = ?",
"answer": "4:00",
"correctAnswer": "4:00",
"difficulty": "normal",
"visualIntent": {
"layout": "icon-badge",
"category": "fruits",
"label": "4:00"
}
},
{
"id": 13,
"type": "clock-math",
"subType": "elapsed-time",
"question": "How many minutes from 5:55 to 6:20?",
"answer": 25,
"correctAnswer": "25",
"difficulty": "normal",
"visualIntent": {
"layout": "icon-badge",
"category": "fruits",
"label": "25"
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},
{
"id": 14,
"type": "clock-math",
"subType": "read-time",
"question": "What time is shown on the clock? [hour hand near 4, minute hand at 35 minutes]",
"answer": "4:35",
"correctAnswer": "4:35",
"difficulty": "normal",
"visualIntent": {
"layout": "icon-badge",
"category": "fruits",
"label": "4:35"
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},
{
"id": 15,
"type": "clock-math",
"subType": "add-time",
"question": "20 minutes after 1:40 = ?",
"answer": "2:00",
"correctAnswer": "2:00",
"difficulty": "normal",
"visualIntent": {
"layout": "icon-badge",
"category": "fruits",
"label": "2:00"
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},
{
"id": 16,
"type": "clock-math",
"subType": "add-time",
"question": "40 minutes after 11:20 = ?",
"answer": "12:00",
"correctAnswer": "12:00",
"difficulty": "normal",
"visualIntent": {
"layout": "icon-badge",
"category": "fruits",
"label": "12:00"
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},
{
"id": 17,
"type": "clock-math",
"subType": "elapsed-time",
"question": "How many minutes from 5:50 to 6:30?",
"answer": 40,
"correctAnswer": "40",
"difficulty": "normal",
"visualIntent": {
"layout": "icon-badge",
"category": "fruits",
"label": "40"
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},
{
"id": 18,
"type": "clock-math",
"subType": "read-time",
"question": "What time is shown on the clock? [9 o'clock]",
"answer": "9:00",
"correctAnswer": "9:00",
"difficulty": "normal",
"visualIntent": {
"layout": "icon-badge",
"category": "fruits",
"label": "9:00"
}
},
{
"id": 19,
"type": "clock-math",
"subType": "read-time",
"question": "What time is shown on the clock? [hour hand near 10, minute hand at 10 minutes]",
"answer": "10:10",
"correctAnswer": "10:10",
"difficulty": "normal",
"visualIntent": {
"layout": "icon-badge",
"category": "fruits",
"label": "10:10"
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},
{
"id": 20,
"type": "clock-math",
"subType": "subtract-time",
"question": "10 minutes before 12:55 = ?",
"answer": "12:45",
"correctAnswer": "12:45",
"difficulty": "normal",
"visualIntent": {
"layout": "icon-badge",
"category": "fruits",
"label": "12:45"
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}Teaching Notes
- What time is shown on the clock? [hour hand near 7, minute hand at 40 minutes]
- How many minutes from 1:30 to 2:30?
- 5 minutes before 3:05 = ?
- What time is shown on the clock? [hour hand near 9, minute hand at 45 minutes]
- How many minutes from 1:20 to 1:30?
- 90 minutes after 5:10 = ?
- How many minutes from 1:40 to 2:30?
- What time is shown on the clock? [hour hand near 3, minute hand at 15 minutes]
- What time is shown on the clock? [hour hand near 9, minute hand at 25 minutes]
- 5 minutes before 12:50 = ?
- 40 minutes before 11:45 = ?
- 55 minutes after 3:05 = ?
- How many minutes from 5:55 to 6:20?
- What time is shown on the clock? [hour hand near 4, minute hand at 35 minutes]
- 20 minutes after 1:40 = ?
- 40 minutes after 11:20 = ?
- How many minutes from 5:50 to 6:30?
- What time is shown on the clock? [9 o'clock]
- What time is shown on the clock? [hour hand near 10, minute hand at 10 minutes]
- 10 minutes before 12:55 = ?
Practice time half hour with free printable worksheets for Grade 1. Uniquely generated — reinforce key math skills with every set.
Frequently Asked Questions
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