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
69 + 10 = ______
73 − 10 = ______
34 + 20 = ______
9 × 10 = ______
89 − 10 = ______
87 + 20 = ______
31 + 10 = ______
1 × 10 = ______
7 × 10 = ______
6 × 10 = ______
8 × 10 = ______
76 + 20 = ______
38 + 20 = ______
80 + 20 = ______
28 + 20 = ______
5 × 10 = ______
85 + 10 = ______
26 − 10 = ______
29 − 10 = ______
35 + 10 = ______
