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
22 + 20 = ______
2 × 10 = ______
53 + 20 = ______
56 + 10 = ______
88 − 10 = ______
42 − 10 = ______
12 + 20 = ______
49 − 10 = ______
9 × 10 = ______
63 + 20 = ______
58 + 10 = ______
52 − 10 = ______
16 + 10 = ______
27 − 10 = ______
31 − 10 = ______
77 + 20 = ______
71 − 10 = ______
81 + 10 = ______
44 + 20 = ______
77 − 10 = ______
