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
80 − 10 = ______
8 × 10 = ______
69 − 10 = ______
49 + 20 = ______
1 × 10 = ______
20 + 10 = ______
9 × 10 = ______
69 + 20 = ______
47 − 10 = ______
55 + 10 = ______
46 + 20 = ______
51 − 10 = ______
43 − 10 = ______
27 + 10 = ______
22 + 10 = ______
64 − 10 = ______
47 + 10 = ______
23 + 20 = ______
28 + 20 = ______
60 − 10 = ______
