Estimaciones
4 x 29=
4 x 30= 120
43 x 10=
430
(9 + 1) x 2=
10 x 2 = 20
1 metro = ___ centímetros
100 centímetros
9 x 80= 720
9.8 ÷ 10=
0.98
(12 -5) x 10=
70
2 yardas = ___ pies
1 yarda = 3 pies
2 yardas = 6 pies
81 x 45 =
80 x 50= 4000
0.87 x 100=
87
8 por la suma de 7 y 2
(7+2) x 8 = 9 x 8 = 72
0.5 metros = ___ centímetros
1 metro = 100 centímetros
0.5 metros = 50 centímetros
85 x 320=
90 x 300= 27,000
0.59 x 0.1=
x 0.1 = ÷10
0.059
La mitad de la suma de 3 y 5
(3 + 5) ÷ 2 =
8 ÷ 2 = 4
25 pulgadas (inches) = ___ pies (feet)
12 inches = 1 ft
25 inches ÷ 12 = 2 remainder 1
25 inches = 2 feet 1 inch
1.8 x 25.5 x 9.7 =
2 x 30 x 10 =
20 x 30 = 600
8.59 ÷ 102 =
8.59 ÷ 100 = 0.0859
La suma de 2 cincos y 4 sietes
(2 x 5) + (4 x 7) =
10 + 28 = 38
45 gramos = ___ kg
g to kg --> ÷ 1,000
45 ÷ 1,000 = 0.045