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
51 + 20 = ______
1 × 10 = ______
69 + 10 = ______
60 − 10 = ______
5 × 10 = ______
88 + 10 = ______
8 × 10 = ______
91 − 10 = ______
55 + 10 = ______
52 + 20 = ______
82 − 10 = ______
61 + 10 = ______
92 − 10 = ______
30 + 10 = ______
18 + 10 = ______
4 × 10 = ______
93 − 10 = ______
55 + 20 = ______
59 + 10 = ______
39 + 20 = ______
