Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
1 × 10 = ______
79 − 10 = ______
42 + 10 = ______
8 × 10 = ______
82 − 10 = ______
6 × 10 = ______
58 − 10 = ______
56 + 20 = ______
98 − 10 = ______
15 + 20 = ______
74 − 10 = ______
59 + 20 = ______
75 − 10 = ______
30 + 10 = ______
67 + 10 = ______
9 × 10 = ______
78 + 20 = ______
88 − 10 = ______
55 + 20 = ______
52 + 10 = ______
