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
87 − 10 = ______
7 × 10 = ______
97 − 10 = ______
34 − 10 = ______
5 × 10 = ______
55 − 10 = ______
3 × 10 = ______
72 + 10 = ______
70 + 20 = ______
58 + 20 = ______
29 + 10 = ______
1 × 10 = ______
2 × 10 = ______
85 + 20 = ______
42 + 10 = ______
82 + 20 = ______
8 × 10 = ______
23 − 10 = ______
66 + 20 = ______
14 + 20 = ______
