matematika kelas kecil sd dengan contoh soal

matematika

1. Perimeter and area of plane A. Perimeter and area of triangle B. Perimeter and area of peralelogram D. Exercise C. Test

2. A. Perimeter and area of triangle 1. Perimeter of triangle The perimeter of a triangle is found by adding up all the sides. a. b. Perimeter and area of triangle Perimeter and area of peralelogram c. Test BAB IV Exercise A C B Perimeter = sum of all sides Perimeter = AB+ BC + AC

3. 2. Area of Triangle Look at the following rectangle image. length = p width = l The area of rectangle ABCD = p x l The green area is in the form of a triangle, namely triangle ABD. B A D C l p green Yellow 25 cm 50 cm a. b. Perimeter and area of triangle Perimeter and area of peralelogram c. Test BAB IV Exercise

4. Area triangle ABD = area rectangle ABCD divided by 2 Area triangle ABD = (p x l) : 2 example AB = base of triangle ABD = a AD = height of triangle ABD = t The area of ​​the triangle ABD is formulated as : area of ​​the triangle ABD = (a x t) : 2 So, the area of ​​the green part of the flag is: The green area = (a x t) : 2 = (50x 25) : 2 = 1.250 : 2 = 625 cm² a. b. Perimeter and area of triangle Perimeter and area of peralelogram c. Test BAB IV Exercise

5. B. Perimeter and area of parallelogram 1. Perimeter of paralelogram Perimeter of paralelogram = 2 x (base + hypotenuse) B A D C Perimeter parallelogram ABCD = base side + hypotenuse + base side + hypotenuse = AB + BC + CD + AD = AB + AB + BC + BC = 2 x AB + 2 x BC = 2 x (AB + BC) a. b. Perimeter and area of triangle Perimeter and area of peralelogram c. Test BAB IV Exercise

6. 2. The Area of Paralelogram Area of Paralelogram = Base x Height B A D C I II B A D C F E t t a. b. Perimeter and area of triangle Perimeter and area of peralelogram c. Test BAB IV Exercise

7. C. Soal Cerita Sinta will put lace on a parallelogram-shaped tablecloth. The size of the tablecloth is 4 meters and the sloping side is 2 meters. How many meters of lace did Sinta use? Answer : Base of tablecloth = 4 meters Hypoternuse = 2 meters Perimeter of tablecloth = 2 x (base + hypotenuse) = 2 x (4m +2m) = 2 x 6m = 12 m So, the lace that Sinta used is 12 m a. b. Perimeter and area of triangle Perimeter and area of peralelogram c. Test BAB IV Exercise

8. Latihan 1. The perimeter of a parallelogram with a base of 16 cm and a hypotenuse of 10 cm is .... a. 42 cm b. 52 cm c. 40 cm d. 50 cm 2. The perimeter of the triangle below is .... a. 30 b. 40 c. 50 d. 60 7 cm 15 cm 18 cm a. b. Perimeter and area of triangle Perimeter and area of peralelogram c. Test BAB IV Exercise

9. 3. The height of a triangle with an area of ​​35 cm 2 and a base of 14 cm is.... a. 4 b. 5 c. 6 d. 7 3. The area of ​​the parallelogram is 75 cm 2 . If the base of the parallelogram is 15 cm, its height is a. 20 cm b. 15 cm c. 10 cm d. 5 cm a. b. Perimeter and area of triangle Perimeter and area of peralelogram c. Test BAB IV Exercise