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
66 + 10 = ______
53 + 20 = ______
4 × 10 = ______
8 × 10 = ______
23 + 20 = ______
88 + 20 = ______
2 × 10 = ______
1 × 10 = ______
9 × 10 = ______
90 − 10 = ______
67 + 20 = ______
79 + 20 = ______
36 + 10 = ______
80 − 10 = ______
31 − 10 = ______
83 + 10 = ______
27 + 20 = ______
82 − 10 = ______
60 + 10 = ______
24 − 10 = ______
