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 = ______
52 − 10 = ______
66 − 10 = ______
43 + 10 = ______
40 + 10 = ______
9 × 10 = ______
1 × 10 = ______
42 − 10 = ______
96 − 10 = ______
84 − 10 = ______
2 × 10 = ______
84 + 20 = ______
20 + 20 = ______
85 + 20 = ______
63 − 10 = ______
37 + 10 = ______
40 + 20 = ______
82 + 20 = ______
51 + 20 = ______
69 − 10 = ______
