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
3 × 10 = ______
57 + 20 = ______
30 + 20 = ______
79 + 20 = ______
34 + 10 = ______
9 × 10 = ______
28 + 10 = ______
99 − 10 = ______
47 + 10 = ______
7 × 10 = ______
95 − 10 = ______
4 × 10 = ______
73 + 20 = ______
64 + 20 = ______
67 + 20 = ______
48 + 10 = ______
79 + 10 = ______
49 − 10 = ______
98 − 10 = ______
6 × 10 = ______
