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
75 + 10 = ______
45 + 20 = ______
59 + 10 = ______
85 + 20 = ______
52 − 10 = ______
98 − 10 = ______
8 × 10 = ______
63 + 20 = ______
2 × 10 = ______
32 − 10 = ______
28 + 10 = ______
17 + 10 = ______
42 + 10 = ______
55 + 20 = ______
80 + 20 = ______
4 × 10 = ______
15 + 10 = ______
7 × 10 = ______
1 × 10 = ______
33 − 10 = ______
