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 = ______
69 + 10 = ______
4 × 10 = ______
54 + 10 = ______
93 − 10 = ______
15 + 20 = ______
42 + 20 = ______
32 − 10 = ______
5 × 10 = ______
63 − 10 = ______
64 + 20 = ______
6 × 10 = ______
59 − 10 = ______
99 − 10 = ______
14 + 10 = ______
77 − 10 = ______
3 × 10 = ______
80 + 20 = ______
83 + 20 = ______
34 + 10 = ______
