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 = ______
15 + 10 = ______
42 − 10 = ______
80 − 10 = ______
69 − 10 = ______
89 − 10 = ______
20 + 10 = ______
36 + 20 = ______
65 − 10 = ______
65 + 10 = ______
94 − 10 = ______
51 − 10 = ______
85 + 20 = ______
31 − 10 = ______
8 × 10 = ______
32 + 20 = ______
42 + 10 = ______
35 + 10 = ______
1 × 10 = ______
49 − 10 = ______
