Do ourselves (Chapter 11)
Activities
Add the following numbers. (Put the results in the blank spaces.)
(1)
15 + 24 =
39
(2)
54 + 31 =
85
(3)
0+ 97 =
97
(4)
0+ 0 =
0
(5)
45 + 20 =
65
(6)
30+ 50 =
80
(7)
17 + 79 =
96
(8)
48 + 26 =
74
(9)
24 + 68 =
92
(10)
57 + 29 =
86
(11)
28 + 42 =
70
(12)
33 + 57 =
90
Subtract the following numbers. (Put the results in the blank spaces.)
(1)
46 - 12 =
34
(2)
68 - 26 =
42
(3)
35 - 15 =
20
(4)
58 - 50 =
8
(5)
28 - 0 =
28
(6)
0- 0 =
0
(7)
75 - 29 =
46
(8)
34 - 15 =
19
(9)
52 - 36 =
16
(10)
94 - 87 =
7
(11)
40- 14 =
26
(12)
63 - 56 =
7
Calculate the following multiplications. (Put the results in the blank spaces.)
(1)
2 ⨯ 4 =
8
(2)
3 ⨯ 3 =
9
(3)
4 ⨯ 5 =
20
(4)
6 ⨯ 4 =
24
(5)
7 ⨯ 5 =
35
(6)
8 ⨯ 9 =
72
(7)
9 ⨯ 3 =
27
(8)
1 ⨯ 8 =
8
(9)
10⨯ 6 =
60
(10)
7 ⨯ 6 =
42
(11)
0⨯ 10 =
0
(12)
9 ⨯ 7 =
63
Calculate the following divisions. (Put the results in the blank spaces.)
(1)
6 ÷ 2 =
3
(2)
8 ÷ 4 =
2
(3)
12 ÷ 3 =
4
(4)
15 ÷ 5 =
3
(5)
18 ÷ 2 =
9
(6)
25 ÷ 5 =
5
(7)
28 ÷ 7 =
4
(8)
36 ÷ 9 =
4
(9)
49 ÷ 7 =
7
(10)
48 ÷ 8 =
6
(11)
56 ÷ 7 =
8
(12)
72 ÷ 9 =
8
Fill in the blank
(1) 66 seconds =
1
minute abd
6
seconds
(2) 111 minutes =
1
hour and
51
minutes
(3) 30 hours =
1
day and
6
hours