Online Test — Addition Strategies
10 Questions • 15 min • Chapter MCQ
15:00
Question 1 of 10
medium
29 + 11 using make-10?
30
39
40
50
Explanation: 29+1=30 then +10=40
Question 2 of 10
easy
Using doubles: 7 + 7 = ?
13
14
15
16
Explanation: 7+7=14
Question 3 of 10
easy
Near doubles: 6 + 7 = ?
12
13
14
15
Explanation: 6+6=12 so 6+7=13
Question 4 of 10
medium
38 + 20 = 58 uses which strategy?
Make 10
Doubles
Adding tens
Counting back
Explanation: Adding tens
Question 5 of 10
easy
What is 46 + 30?
56
66
76
86
Explanation: 46+30 = 76
Question 6 of 10
hard
47 + 19: compute 47+20 then?
Add 1
Subtract 1
Add 10
Subtract 10
Explanation: 47+20=67 then -1=66
Question 7 of 10
medium
8 + 5 using make-10: 8+2+?
2
3
5
8
Explanation: 8+2=10 then +3=13
Question 8 of 10
easy
Which is a doubles fact?
5+6
7+8
9+9
4+6
Explanation: 9+9=18 is doubles
Question 9 of 10
medium
53 + 9 = ?
61
62
63
72
Explanation: 53+7=60 then +2=62
Question 10 of 10
easy
25 + 25 = ?
40
45
50
55
Explanation: 25+25=50