10+2=
12
10-5
5
What are 2 subtraction sentences we could make?
9-4=5
9-5=4
12, 13, 14, 15, __, __
16, 17
one
10+7=
17
15-6=
9
What are 2 addition sentences we could make?
4+5=9
5+4=9
Write the next numbers in the number pattern:
18, 17, 16, 15, ___, ___, ___
13, 12, 11
On your whiteboard..
Spell the number 5
five
15+4=
19
15-10=
5
Whole:10
Part: 2
Part: ____
8
1st, ____, 3rd,____
2nd, 4th
On your whiteboard...
spell the number 11
eleven
8+7=
15
20-6=
14
8+ 2=10
What is a subtraction sentence in this number-family?
10-2=8 or 10-8=2
Arrange the numbers from greatest to smallest:
7, 13, 18, 11
18, 13, 11, 7
On your whiteboard...
spell the number 15
fifteen
5+4 = 8 + ___
1
20-19=
Whole: 15
Part: 11
Part: 4
Find all number sentences.
11+4=15
4+11=15
15-4=11
15-11=4
Can you continue and say...
1st, 2nd, _____, ______, ______
3rd, 4th, 5th
On your whiteboard, spell the number 18
eighteen