Adding
Mental Math
56 + 23
79
78-32
46
30 x 7
210
What is the value of the 7 in 12.7
7 tenths
What do the following words mean?
1. product?
2. sum?
3. difference?
4. partial products?
1. Answer to a multiplication problem
2. Answer to an addition problem
3. Answer to a subtraction problem
4. Part of an answer to a multiplication problem
47 + 52
99
100-35
65
45 x 200
9,000
What is the value of the 8 in 456.08
8 hundreths
What is the standard form of
2 + 4/10 + 3/100
2.43
123 + 35 + 42
200
4,567- 1,489
3,078
57 x 8
456
Add
345.89 + 1.45 + 5.1
352.44
What is the expanded form of this number?
45.32
40 + 5 + 3/10 + 2/100
4,325 + 2,347
6, 672
2,000-398
1,602
45 x 37
1, 665
Round 45.67 to the nearest tenth
45.7
Peter Elf had 149 presents (not all for him) on Christmas Eve. On Christmas Day he received 132 more presents and he gave away 128 presents. How many presents did he have to open for himself on Christmas Day?
153 presents
345,789 + 567, 989 + 45, 345
959, 123
10,000-4,678
5, 322
123 x 88
10, 824
Subtract
7-4.56
2.44
Santa needs to order boots for all of his reindeer. He has four reindeer pens with 12, 19, 14 and 16 reindeer in them. How many boots will he need to order?
244 boots