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
71 + 10 = ______
53 − 10 = ______
99 − 10 = ______
44 + 10 = ______
25 + 10 = ______
18 + 20 = ______
4 × 10 = ______
91 − 10 = ______
83 + 10 = ______
92 − 10 = ______
30 + 10 = ______
77 + 20 = ______
9 × 10 = ______
6 × 10 = ______
68 + 20 = ______
85 − 10 = ______
22 + 20 = ______
35 − 10 = ______
23 + 10 = ______
41 + 20 = ______
