Addition of Numbers — Counting 1 to 170 | Primary 1 Mathematics 3rd Term Week 2

Subject: Mathematics (Numeracy) | Class: Primary 1 | Term: 3rd Term | Week: 2

Learning Objectives

By the end of the lesson, most pupils should be able to:

1. Identify and read correctly the numbers 1–170.
2. Write correctly the numbers 1–170.
3. Add two whole numbers with sum not more than 20.

Entry Behaviour

The pupils can count 1–100 correctly.

Instructional Materials

Flashcards and number charts.

Lesson 1 — Counting Numbers 1–50

1	2	3	4	5	6	7	8	9	10
11	12	13	14	15	16	17	18	19	20
21	22	23	24	25	26	27	28	29	30
31	32	33	34	35	36	37	38	39	40
41	42	43	44	45	46	47	48	49	50

Lesson 2 — Counting Numbers 51–100

51	52	53	54	55	56	57	58	59	60
61	62	63	64	65	66	67	68	69	70
71	72	73	74	75	76	77	78	79	80
81	82	83	84	85	86	87	88	89	90
91	92	93	94	95	96	97	98	99	100

Lesson 3 — Counting Numbers 101–170

101	102	103	104	105	106	107	108	109	110
111	112	113	114	115	116	117	118	119	120
121	122	123	124	125	126	127	128	129	130
131	132	133	134	135	136	137	138	139	140
141	142	143	144	145	146	147	148	149	150
151	152	153	154	155	156	157	158	159	160
161	162	163	164	165	166	167	168	169	170

Lesson 4 — Addition of 1-Digit Numbers (Sum not more than 20)

Activity 1 — Sum not more than 10

1+1=2, 2+1=3, 3+1=4, 4+1=5, 5+1=6, 6+1=7, 7+1=8, 8+1=9, 9+1=10

Activity 2 — Sum not more than 15

1+2=3, 2+2=4, 3+2=5, 4+2=6, 5+2=7, 6+2=8, 7+2=9, 8+2=10, 9+2=11, 10+2=12, 11+2=13, 12+2=14, 13+2=15

Activity 3 — Sum not more than 20

1+3=4, 2+3=5, 3+3=6, 4+3=7, 5+3=8, 6+3=9, 7+3=10, 8+3=11, 9+3=12, 10+3=13, 11+3=14, 12+3=15, 13+3=16, 14+3=17, 15+3=18

Class Exercise / Assignment

Complete the following:

1. 9 + 2 = ___
2. 5 + 3 = ___
3. 4 + 5 = ___
4. 8 + 3 = ___
5. 1 + 10 = ___

Lesson Evaluation

1. Identify and read correctly the numbers 1–170.
2. Write correctly the numbers 1–170.

Next Lesson: Subtraction of Numbers and Mathematical Symbols — Week 3