Split it up
Every number from 11 to 20 is equal to 10 + another number, list them here
11 = 10 +
12 = 10 +
13 = 10 +
14 = 10 +
15 = 10 +
16 = 10 +
17 = 10 +
18 = 10 +
19 = 10 +
20 = 10 +
11 = 10 + 1
12 = 10 + 2
13 = 10 + 3
14 = 10 + 4
15 = 10 + 5
16 = 10 + 6
17 = 10 + 7
18 = 10 + 8
19 = 10 + 9
20 = 10 + 10
5 + 4 - 3 - 5
1
5 + 4 = 9
9 - 3 = 6
6 - 5 = 1
11 + 7 =
12 + 3 =
14 + 4 =
11 + 7 = 18
10 + 1 + 7 = 18
12 + 3 = 15
10 + 2 + 3 = 15
14 + 4 = 18
10 + 4 + 4 = 18
What numbers are below twenty when you add 4?
13, 14, 15, 16, 17 , 18, 19, 20
13, 14, 15
Split these numbers up into the sum of two single digits
18 =
19 =
17 =
Answers may vary
7 + 2 + 1 - 8
2
7 + 2 = 9
9 + 1 = 10
10 - 8 = 2
What are the doubles between 10 and 20?
12 =
14 =
16 =
18 =
20 =
12 = 6 + 6
14 = 7 + 7
16 = 8 + 8
18 = 9 + 9
20 = 10 + 10
How many ways can you make 18 using at least one two digit number?
10 + 8
11 + 7
12 + 6
13 + 5
14 + 4
15 + 3
16 + 2
17 + 1
Complete these sums
13 = 9 +
14 = 9 +
15 = 9 +
16 = 9 +
13 = 9 + 4
14 = 9 + 4
15 = 9 + 6
16 = 9 + 7
3 + 3 + 3 - 5 + 4
8
3 + 3 = 6
6 + 3 = 9
9 - 5 = 4
4 + 4 = 8
9 + 7 =
8 + 3 + 7 =
8 + 9 =
5 + 7 + 8 =
9 + 7 = 16
8 + 3 + 7 = 18
8 + 9 = 17
5 + 7 + 8 = 20
18 - 7 + 6 - 2 + 4 - 3
16
18 - 7 = 11
11 + 6 = 17
17 - 2 = 15
15 + 4 = 19
19 - 3 = 16
Complete these problems by first splitting up the larger number so it makes 10 with the smaller number:
8 + 7 =
9 + 5 =
8 + 7 =
8 + 2 + 5
9 + 5 =
9 + 1 + 4
4 + 6 - 7 + 1 - 2
2
4 + 6 = 10
10 - 7 = 3
3 + 1 = 4
4 - 2 = 2
17 - 6 + 3 + 4
18
17 - 6 = 11
11 + 3 = 14
14 + 4 = 18
I'm thinking of a number that is 5 more than 13 + 2, what is my number?
Split up these problems so they only use single digits
17 - 12 =
18 - 13 =
19 - 7 =
20 - 14 =
17 - 12 = 10 + 7 - 10 - 2 = 5
18 - 13 = 10 + 8 - 10 - 3 = 5
19 - 7 = 10 + 9 - 7 = 2
20 - 14 = 10 + 10 - 10 - 4 = 6
2 + 5 - 3 - 1 + 7 - 4
6
2 + 5 = 7
7 - 3 = 4
4 - 1 = 3
3 + 7 = 10
10 - 4 = 6
18 - 12 + 6 + 7
19
18 - 12 = 6
6 + 6 = 12
12 + 7 = 19
On a number line, I go forward 5 places, backward 4 places, and forward 7 places, how many spaces have I moved? If I started on space 11, where am I now?
5 + 4 + 7 = 16
You are now on 19