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
39 + 10 = ______
6 × 10 = ______
9 × 10 = ______
61 − 10 = ______
60 + 20 = ______
7 × 10 = ______
11 + 20 = ______
3 × 10 = ______
89 + 20 = ______
93 − 10 = ______
22 − 10 = ______
82 + 20 = ______
78 − 10 = ______
55 + 10 = ______
34 + 20 = ______
30 − 10 = ______
42 − 10 = ______
4 × 10 = ______
16 + 20 = ______
51 + 20 = ______
