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
79 − 10 = ______
83 + 10 = ______
64 + 10 = ______
33 + 10 = ______
88 + 10 = ______
6 × 10 = ______
49 + 20 = ______
8 × 10 = ______
55 − 10 = ______
56 − 10 = ______
42 − 10 = ______
43 + 20 = ______
1 × 10 = ______
90 − 10 = ______
12 + 20 = ______
65 + 20 = ______
62 − 10 = ______
38 + 10 = ______
23 + 10 = ______
68 − 10 = ______
