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 = ______
33 + 20 = ______
31 − 10 = ______
22 + 20 = ______
73 − 10 = ______
77 − 10 = ______
5 × 10 = ______
38 + 10 = ______
3 × 10 = ______
11 + 20 = ______
35 − 10 = ______
79 − 10 = ______
81 + 20 = ______
80 + 20 = ______
29 + 10 = ______
54 − 10 = ______
6 × 10 = ______
2 × 10 = ______
69 + 20 = ______
51 − 10 = ______
