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
80 + 20 = ______
44 + 10 = ______
47 + 20 = ______
8 × 10 = ______
34 + 20 = ______
83 − 10 = ______
1 × 10 = ______
58 + 10 = ______
9 × 10 = ______
31 − 10 = ______
98 − 10 = ______
25 + 10 = ______
63 + 20 = ______
44 − 10 = ______
49 − 10 = ______
20 + 10 = ______
50 + 20 = ______
61 − 10 = ______
7 × 10 = ______
79 + 20 = ______
