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
5 × 10 = ______
8 × 10 = ______
82 + 10 = ______
63 − 10 = ______
37 + 20 = ______
56 − 10 = ______
68 − 10 = ______
9 × 10 = ______
87 + 20 = ______
52 + 20 = ______
65 − 10 = ______
22 + 10 = ______
57 − 10 = ______
76 − 10 = ______
56 + 10 = ______
85 + 20 = ______
1 × 10 = ______
88 − 10 = ______
80 + 20 = ______
70 + 20 = ______
