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
77 + 20 = ______
54 − 10 = ______
88 − 10 = ______
4 × 10 = ______
87 + 10 = ______
37 + 10 = ______
69 + 20 = ______
2 × 10 = ______
41 + 20 = ______
60 − 10 = ______
79 + 20 = ______
14 + 10 = ______
43 − 10 = ______
27 + 10 = ______
1 × 10 = ______
27 − 10 = ______
80 − 10 = ______
34 − 10 = ______
6 × 10 = ______
25 + 20 = ______
